fix: fix metric alarm namespace resolution

[chalindukodikara]

Purpose

$subject

Approach

openchoreo/openchoreo#3299

Related Issues

Include any related issues that are resolved by this PR.

Checklist

• Tests added or updated (unit, integration, etc.)
• Samples updated (if applicable)

Remarks

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Configuration used: defaults

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Run ID: ee870640-1f11-4d28-94a2-b973063a4ab9

📥 Commits

Reviewing files that changed from the base of the PR and between f5c0654 and 38109e4.

📒 Files selected for processing (11)

• observability-metrics-aws-cloudwatch/README.md
• observability-metrics-aws-cloudwatch/helm/Chart.yaml
• observability-metrics-aws-cloudwatch/helm/values.yaml
• observability-metrics-aws-cloudwatch/internal/cloudwatchmetrics/alarms.go
• observability-metrics-aws-cloudwatch/internal/cloudwatchmetrics/alarms_test.go
• observability-metrics-aws-cloudwatch/internal/cloudwatchmetrics/client_test.go
• observability-metrics-aws-cloudwatch/internal/cloudwatchmetrics/queries.go
• observability-metrics-aws-cloudwatch/internal/cloudwatchmetrics/queries_test.go
• observability-metrics-aws-cloudwatch/internal/handlers_metrics.go
• observability-metrics-aws-cloudwatch/internal/handlers_metrics_test.go
• observability-metrics-aws-cloudwatch/internal/scope_resolver.go

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 68.51852% with 17 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...etrics-aws-cloudwatch/internal/handlers_metrics.go	30.00%	12 Missing and 2 partials ⚠️
...-metrics-aws-cloudwatch/internal/scope_resolver.go	0.00%	3 Missing ⚠️

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