Refactor mount hooks for license compliance

What does this MR do?

Refactor mount hook to set API endpoint for License Compliance Policy management when vue app is initialized.

Issue: #202563 (closed)

Additional context: !22465 (comment 279417988)

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Does this MR meet the acceptance criteria?

Conformity

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• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
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Security

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