fix: Use property access when refrencing numeric and map accessors

[mutahhir]

Related issue

Fixes https://github.com/orgs/hashicorp/projects/207/views/12?pane=issue&itemId=25543682

Description

Using String templates instead of propertyAccess causes problems with nesting template strings (which would need more context to solve properly), and also when used within CDKTF functions. This PR moves most template string usage that required use of FQN over to using the CDKTF propertyAccess function.

Checklist

• I have updated the PR title to match CDKTF's style guide
• I have run the linter on my code locally
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation if applicable
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works if applicable
• New and existing unit tests pass locally with my changes

[ansgarm]

[github-actions]

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