test: [SDK-4333] fix Appium tests for Flutter Android

[fadi-george]

Description

Fix Appium E2E tests to pass on Flutter Android. Previously only iOS was working.

appium_android.mov

Details

Webview / IAM handling

• Fixed IAM webview detection on Android by iterating getWindowHandles() within the WEBVIEW_* context, since Android's ChromeDriver caches old window handles across multiple IAMs
• Extracted switchToWebViewContext() and switchToIAMWebView() helpers for cleaner platform-specific context switching
• Simplified isWebViewVisible() for Android to just check for WEBVIEW context existence

Text input

• Added typeInto() helper that calls el.click() before el.setValue() on Flutter Android, since setValue alone doesn't work without focus
• Replaced all setValue calls across specs 04-10 with typeInto()
• Updated loginUser() and addTag() in app.ts to use the shared helper

Scroll improvements

• Changed scrollToEl scroll distance from small (20%) to normal (50%) so it can reach elements further down the page
• Added a small nudge scroll when an element is found in the bottom 20% of the screen to avoid clipping

Platform-specific fixes

• Fixed location spec to use UiAutomator text selectors for Android permission dialogs instead of iOS-only mobile: alert
• Added getToggleState() helper using value on iOS and checked on Android
• Android-specific pause after closing IAMs to let animations complete

Cleanup

• Removed unnecessary ChromeDriver autodownload flags
• Removed redundant try/catch blocks and logging

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