Add TransactionType into allowedDimensions for Azure storage account.

[ritalwar]

• Enhancement

Proposed commit message

To enable TSDB functionality without data loss, make sure all dimension fields are set to "true." While dimensions like "GeoType," "Authentication," "BlobType," "Tier," and "FileShare" were recently added, alongside existing dimensions "ApiName" and "ResponseType," the "TransactionType" dimension was overlooked. This PR corrects that by adding the "TransactionType" dimension, ensuring complete TSDB functionality for Azure Storage Account.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

Related issues

• Closes Enhance Azure storage account dataset by adding missing dimension fields #36312

[mergify]

This pull request does not have a backport label.
If this is a bug or security fix, could you label this PR @ritalwar? 🙏.
For such, you'll need to label your PR with:

• The upcoming major version of the Elastic Stack
• The upcoming minor version of the Elastic Stack (if you're not pushing a breaking change)

To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v8./d.0 is the label to automatically backport to the 8./d branch. /d is the digit

[elasticmachine]

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• Start Time: 2023-08-25T06:26:48.896+0000

• Duration: 56 min 36 sec

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Test	Results
Failed	0
Passed	1478
Skipped	96
Total	1574

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