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

❌ Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 18.02%. Comparing base (65e5409) to head (34bed7a).
⚠️ Report is 148 commits behind head on main.

Files with missing lines	Patch %	Lines
...tack/engine/orchestration/NetworkOrchestrator.java	0.00%	4 Missing and 1 partial ⚠️
...n/java/com/cloud/template/TemplateManagerImpl.java	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #12854      +/-   ##
============================================
+ Coverage     17.61%   18.02%   +0.41%     
- Complexity    15665    16451     +786     
============================================
  Files          5917     5968      +51     
  Lines        531400   537120    +5720     
  Branches      64970    65966     +996     
============================================
+ Hits          93603    96818    +3215     
- Misses       427244   429379    +2135     
- Partials      10553    10923     +370     

Flag	Coverage Δ
uitests	3.53% <ø> (-0.18%)	⬇️
unittests	19.19% <0.00%> (+0.50%)	⬆️

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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.