优化下载SSL异常处理

[Xirren]

fix #5115
针对DNS污染SSL问题进行处理
（修了上一个pr的null check）

[Copilot]

Pull request overview

This PR enhances SSL exception handling for downloads, specifically addressing DNS pollution issues. The changes fix a critical operator precedence bug that could cause NullPointerExceptions and add specific error messaging for DNS-related SSL failures.

Changes:

• Fixed operator precedence bug in SSL exception message checks across three Java files
• Added new localized error message exception.dns.pollution in 9 language files
• Implemented DNS pollution detection in download error handling

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties	Added Chinese (Simplified) error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N_zh.properties	Added Chinese (Traditional) error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N_uk.properties	Added Ukrainian error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N_ru.properties	Added Russian error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N_lzh.properties	Added Classical Chinese error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N_ja.properties	Added Japanese error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N_es.properties	Added Spanish error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N_ar.properties	Added Arabic error message for DNS pollution SSL errors
HMCL/src/main/resources/assets/lang/I18N.properties	Added English error message for DNS pollution SSL errors
HMCL/src/main/java/org/jackhuang/hmcl/ui/account/AddAuthlibInjectorServerPane.java	Fixed operator precedence bug in SSL exception message null check
HMCL/src/main/java/org/jackhuang/hmcl/setting/DownloadProviders.java	Added DNS pollution detection and fixed exception handling logic
HMCL/src/main/java/org/jackhuang/hmcl/setting/Accounts.java	Fixed operator precedence bug in SSL exception message null check

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[Copilot]

The condition on this line is overly complex and difficult to read. The nested null check combined with the negation makes the logic hard to follow. Consider extracting the "Remote host terminated" check into a separate boolean variable or method for better readability and maintainability.

Suggested change

	} else if (exception.getCause() instanceof SSLHandshakeException && !(exception.getCause().getMessage() != null && exception.getCause().getMessage().contains("Remote host terminated"))) {
	if (exception.getCause().getMessage() != null && (exception.getCause().getMessage().contains("No name matching") || exception.getCause().getMessage().contains("No subject alternative DNS name matching"))) {
	return i18n("install.failed.downloading.detail", uri) + "\n" + i18n("exception.dns.pollution");
	}
	return i18n("install.failed.downloading.detail", uri) + "\n" + i18n("exception.ssl_handshake");
	} else {
	return i18n("install.failed.downloading.detail", uri) + "\n" + StringUtils.getStackTrace(exception.getCause());
	} else {
	Throwable cause = exception.getCause();
	String causeMessage = cause == null ? null : cause.getMessage();
	boolean isRemoteHostTerminated = causeMessage != null && causeMessage.contains("Remote host terminated");
	if (cause instanceof SSLHandshakeException && !isRemoteHostTerminated) {
	if (causeMessage != null && (causeMessage.contains("No name matching") || causeMessage.contains("No subject alternative DNS name matching"))) {
	return i18n("install.failed.downloading.detail", uri) + "\n" + i18n("exception.dns.pollution");
	}
	return i18n("install.failed.downloading.detail", uri) + "\n" + i18n("exception.ssl_handshake");
	} else {
	return i18n("install.failed.downloading.detail", uri) + "\n" + StringUtils.getStackTrace(exception.getCause());
	}

[Copilot]

The method call exception.getCause().getMessage() is repeated multiple times on lines 137-138. Consider caching this value in a local variable to improve readability and avoid redundant method calls.

Suggested change

	} else if (exception.getCause() instanceof SSLHandshakeException && !(exception.getCause().getMessage() != null && exception.getCause().getMessage().contains("Remote host terminated"))) {
	if (exception.getCause().getMessage() != null && (exception.getCause().getMessage().contains("No name matching") || exception.getCause().getMessage().contains("No subject alternative DNS name matching"))) {
	} else if (exception.getCause() instanceof SSLHandshakeException) {
	String causeMessage = exception.getCause().getMessage();
	if (causeMessage != null && causeMessage.contains("Remote host terminated")) {
	return i18n("install.failed.downloading.detail", uri) + "\n" + StringUtils.getStackTrace(exception.getCause());
	}
	if (causeMessage != null && (causeMessage.contains("No name matching") || causeMessage.contains("No subject alternative DNS name matching"))) {