Rollup merge of #112403 - nbdd0121:eh_frame, r=Nilstrieb

Prevent `.eh_frame` from being emitted for `-C panic=abort`

Since `CheckAlignment` pass is after the `AbortUnwindingCalls` pass, the `UnwindAction::Terminate` inserted in it has no chance to be converted to `UnwindAction::Unreachable` anymore, causing us to emit landing pads that are not necessary. Although these landing pads can themselves be eliminated by LLVM, `.eh_frame` sections are still generated. This causes trouble for Rust-for-Linux project recently.

This PR changes it to generate `UnwindAction::Terminate` when we opt for `-Cpanic=unwind`, and `UnwindAction::Unreachable` for `-Cpanic=abort`.

`@ojeda`

Author: GuillaumeGomez