Improve TemporalAccessor to CharSequence converter

[jfsanchez91]

Add a better TemporalAccessor to CharSequence converter

• If the Format annotation is not found in the Annotations Metadata by the ConversionContext, then try first the default DateTimeFormatter already provided before falling back to DateTimeFormatter.RFC_1123_DATE_TIME.

Fixes micronaut-projects/micronaut-cache#404

[CLAassistant]

All committers have signed the CLA.

[jfsanchez91]

@graemerocher is it normal for sonar to fail on PRs?

> Task :sonar
Failed to check if project 'micronaut-projects_micronaut-core' is bound
Failed to prepare download of the sensor cache
org.sonar.api.utils.MessageException: Project not found. Please check the 'sonar.projectKey' and 'sonar.organization' properties, the 'SONAR_TOKEN' environment variable, or contact the project administrator

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...
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FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':sonar'.
> Project not found. Please check the 'sonar.projectKey' and 'sonar.organization' properties, the 'SONAR_TOKEN' environment variable, or contact the project administrator

[graemerocher]

unrelated problem. Thanks

[wetted]

@jfsanchez91 Thank you for this fix.

Can you please merge in the latest changes from the micronaut-core 4.0.x branch and push your branch. Assuming CI passes we'll review and merge the fix.