[AURON #2011] History Server fails when BuildInfo event is missing.

[slfan1989]

Which issue does this PR close?

Closes #2011

Rationale for this change

The History Server plugin currently crashes during initialization when the AuronBuildInfoUIData record is missing from the KVStore. This causes applications without BuildInfo events to either fail plugin initialization or show no Auron tab.

What changes are included in this PR?

1. AuronSQLAppStatusStore: Changed buildInfo() to return Option[AuronBuildInfoUIData], catching NoSuchElementException and other exceptions to return None instead of throwing
2. AuronSQLHistoryServerPlugin: Removed the null check and always create the Auron tab, letting the UI handle empty state
3. AuronAllExecutionsPage: Added buildInfoSummary() method to handle Option[AuronBuildInfoUIData]:
   • Some: displays BuildInfo table as before
   • None: shows user-friendly message "Auron build information is not available for this application."

Are there any user-facing changes?

Yes. When BuildInfo is not available:

• Before: Plugin initialization fails or no Auron tab appears
• After: Auron tab displays with a clear warning message explaining BuildInfo is unavailable

How was this patch tested?

• Existing unit tests pass