Fix project-based network filtering in unmanaged instance import

[dheeraj12347]

When importing unmanaged instances for a project, the UI should list only project networks in the network selection; currently account-level networks are also shown, causing the “no matching network” behavior described in the issue.
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This change wires the project context into the multi-network selector so that the networks list respects the chosen project.
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Implementation details

src/views/compute/wizard/MultiNetworkSelection.vue

Added a projectid prop and passed it through to the listNetworks API call parameters so that networks are filtered by the selected project when present.
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src/views/tools/ImportUnmanagedInstance.vue

Passed form.projectid into via the new :projectid prop so that project selection is honored in the unmanaged instance import flow.
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Testing

npm run lint

Passes; both modified Vue files were auto-fixed by the linter.
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Backend / UI run attempts (blocked):

mvn -Pdeveloper -Dsimulator -DskipTests clean install fails in cloud-engine-schema at systemvm-template-metadata, so the simulator environment could not be fully built locally.
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npm run serve on the current branch fails in DomainActionForm.vue with a “content” error, so the import unmanaged instance UI flow could not be exercised end-to-end.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 3.53%. Comparing base (65e5409) to head (5f1daca).
⚠️ Report is 148 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (65e5409) and HEAD (5f1daca). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (65e5409)	HEAD (5f1daca)
unittests	1	0

Additional details and impacted files

@@              Coverage Diff              @@
##               main   #12854       +/-   ##
=============================================
- Coverage     17.61%    3.53%   -14.09%     
=============================================
  Files          5917      464     -5453     
  Lines        531400    40048   -491352     
  Branches      64970     7533    -57437     
=============================================
- Hits          93603     1414    -92189     
+ Misses       427244    38446   -388798     
+ Partials      10553      188    -10365     

Flag	Coverage Δ
uitests	3.53% <ø> (-0.18%)	⬇️
unittests	?

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[dheeraj12347]

I’ve run pre-commit locally on the fix-import-vm-project-networks branch.
It only reported EOF formatting issues in packaging/centos8, packaging/el9, packaging/el10, and packaging/suse15, which I’ve committed as “Fix pre-commit end-of-file issues”.
The UI changes in MultiNetworkSelection.vue and ImportUnmanagedInstance.vue remain as before. CI workflows are currently awaiting maintainer approval.