Make AgentManagerImpl.handleCommands resilient to listener exceptions

[Damans227]

Description

If one listener in handleCommands throws, the whole loop stops and every listener after it never runs. This can starve pingBy() and cause fake ping timeouts.

This wraps each listener call in a try/catch, so one bad listener just logs a warning and the rest still run. Also fixed a trace log nearby that was logging the wrong class (the Pair wrapper instead of the listener).

Also added the missing hostId field to IdsPowerStateSelectSearch. Without it, VMs loaded through that path always showed a null host, even when they had one. Not a crash, just a wrong log message.

Types of changes

• Bug fix

Feature/Enhancement Scale or Bug Severity

Bug Severity

• Major

How Has This Been Tested?

Added tests: a throwing listener doesn't block the next one, and existing behavior with only successful listeners is unchanged. Also added tests for the null-hostId case, which had no coverage before.

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 19.65%. Comparing base (4f11707) to head (90ce7bd).

Files with missing lines	Patch %	Lines
.../main/java/com/cloud/vm/dao/VMInstanceDaoImpl.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@ Coverage Diff @@## main #13788 +/- ##
=========================================
Coverage 19.65% 19.65% - Complexity 19792 19798 +6 
=========================================
Files 6368 6368 Lines 574881 574887 +6 Branches 70351 70351 =========================================
+ Hits 112970 112999 +29 + Misses 449639 449614 -25 - Partials 12272 12274 +2 

Flag	Coverage Δ
uitests	3.41% <ø> (ø)
unittests	20.93% <87.50%> (+<0.01%)	⬆️

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