Support to pass namespace query parameter in flow/meta request.

[SajidMannikeri17]

Purpose

Consumers had no way to send a namespace query parameter on /flow/meta requests, which is needed to resolve namespace-scoped i18n data (e.g. an entity's localized display name) alongside translations.

Separately, found and fixed a related bug: when a {{ meta(...) }} field (e.g. application.name) resolves to a value that is itself a {{ t(...) }} translation reference, the raw, unresolved template string rendered on screen instead of the translated text.

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Approach

• Added an optional namespace prop, threaded through ThunderIDProvider → FlowMetaProvider → getFlowMeta. When set, it's included as namespace in both the initial flow-meta fetch and every switchLanguage() call. Omitted by default, so existing consumers are unaffected; any consumer can pass whatever value fits their use case.
• Fixed resolveFlowTemplateLiterals: after a {{ meta(...) }} lookup, check if the resolved value is itself a {{ t(...) }} literal (via the existing, previously-unused isTranslationFlowTemplateLiteral helper) and resolve it through t() too. Scoped to the one case that actually occurs, not a generic recursive/looping resolver.
• Added test coverage for resolveFlowTemplateLiterals (previously untested), including the nested-resolution case.

Related Issues

• N/A

Related PRs

• N/A

Checklist

• Followed the contribution guidelines.
• Manual test round performed and verified.
• Documentation provided. (Add links if there are any)
• Tests provided. (Add links if there are any)
  • Unit Tests
  • Integration Tests
• Breaking changes. (Fill if applicable)
  • Breaking changes section filled.
  • breaking change label added.

Security checks

• Followed secure coding standards.
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets.

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