HPCC-32118 Default to case-insensitive metric filtering

[GordonSmith]

Introduced an option to toggle between case-sensitive and case-insensitive filtering

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Testing:

[github-actions]

Jira Issue: https://hpccsystems.atlassian.net//browse/HPCC-32118

Jirabot Action Result:
Updated PR

[jeclrsg]

@GordonSmith One question about a conditional statement. Looked good otherwise

[jeclrsg]

@GordonSmith Only one comment about how that match case button actually shows up in the UI. Seems pretty subtle as to what the status of it is

[GordonSmith]

Rebased for pull