Revert "Fix/1744 isof unquoted type params issue (#3108)"

This reverts commit 1aed366fe1df4d3ae2764bc20cfd8c50fa7dcb04.

Issues

This pull request fixes #xxx.

Description

This PR removes the feature to support unquoted type parameters in cast and isof function calls. The feature caused a breaking change https://github.com/OData/odata.net/issues/3123. We are taking this step back to properly prepare a fix that reintroduces the feature without causing any breaking changes. It's important to note that this feature was not released to AspNetCore.OData, and we do not anticipate significant usage by existing ODL customers.

Checklist (Uncheck if it is not completed)

[ ] Test cases added
[ ] Build and test with one-click build and test script passed

Additional work necessary

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OData / odata.net