[clang-tidy] Disable match on `if constexpr` statements in template...

[clang-tidy] Disable match on `if constexpr` statements in template instantiation for `readability-misleading-indentation` check.

Summary: Fixes fixes `readability-misleading-identation` for `if constexpr`. This is very similar to D71980.

Reviewers: alexfh

Subscribers: xazax.hun, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D72333