[HttpKernel] Add deprecation log for Kernel::isClassInActiveBundle()

See #11869 and #12854
minor #12888 [HttpKernel] Add deprecation log for Kernel::isClassInActiveBundle() (hacfi)

This PR was merged into the 2.7 branch.

Discussion
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[HttpKernel] Add deprecation log for Kernel::isClassInActiveBundle()

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | yes
| Tests pass?   | yes
| Fixed tickets | #11652
| License       | MIT
| Doc PR        | - (Not mentioned in the docs)

See #11869 and #12854

Commits
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5ba6d1f [HttpKernel] Add deprecation log for Kernel::isClassInActiveBundle()