For policy-specific tests, use the version before the policy was
introduced. Otherwise, use 3.5 where possible.
Also, remove `cmake_minimum_required()` and `project()` calls from
individual cases where they are handled by `CMakeLists.txt`.
Fix the genex from commit 997af2e1a6 (Genex: Add TARGET_BUNDLE_DIR_NAME,
2022-04-14, v3.24.0-rc1~233^2) to use the correct bundle directory
extension for each bundle type.
Fixes: #23683
Only generate a graph dependency between a custom command and
a target when the custom command queries for the file path
of an artifact of the target.
This makes generator expressions such as `TARGET_FILE_DIR`
behave the same way as `TARGET_PROPERTY` which never generated
a graph dependency.
