[bp/1.29] Not crash envoy when env resource detector can't detect attributes #32299
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As discussed with @wbpcode I'm creating this backport to 1.29 for this bug. We just merged this feature in Istio and would be great if this can be ported, so maybe the current to be release Istio version can have this.
Commit Message: Backport from #32229
Additional Description:
Risk Level: Low
Testing: Unit, Integration and Manual
Docs Changes: N/A
Release Notes: N/A
Platform Specific Features:
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[Optional Fixes #Issue]
[Optional Fixes commit #PR or SHA]
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