[FEATURE REQ] Support auth by customer defined TokenCredencial for all scenarios

[rujche]

Is your feature request related to a problem? Please describe.
When migrate auth in Spring tests, the pipeline shows that some integration test failed because related feature not support auth by customer defined TokenCredential bean.

1. Link to PR: Migrate Auth in Spring SDKs #40800
2. Link to pipeline: https://dev.azure.com/azure-sdk/internal/_build/results?buildId=3914516&view=logs&j=b6747878-dc75-581a-bba2-ee42aac9c86f&t=9578c5f5-3931-5ca2-47db-3cca71421dc5&l=16070
3. Screenshot of test failure of pipeline:

Describe the solution you'd like
Develop new feature: Make related scenario support customer-defined TokenCredential. Make all existing integration tests passed in pipeline.

Information Checklist
Kindly make sure that you have added all the following information above and checkoff the required fields otherwise we will treat the issuer as an incomplete report

• Description Added
• Expected solution specified

### Tasks
- [ ] Make Service BusMultiBinder support customer defined TokenCredential
- [ ] Make PassworkLessMySQL support customer defined TokenCredential
- [ ] Make KeyVaultPropertySource support customer defined TokenCredential
- [ ] Make ServiceBusJmsPasswordless support customer defined TokenCredential

[rujche]

Sharing:
About ServiceBusMultiBindersIT, @ConditionalOnMissingBean not take effect because there are 2 ApplicationContexts:
Here is the screenshot about how to find the 2 ApplicationContexts: