[5.7] SILGen: Fix potential use-after-free in @_backDeploy coroutines

[tshortli]

Cherry-pick of #60021

The SIL verifier has identified an issue with the SIL generated for property accessors structured like this:

public struct S {
  @available(macOS, introduced: 12.0)
  @_backDeploy(before: macOS 13.0)
  public var x: String {
    _read {
      yield "x"
    }
  }
}

The emitted SIL is invalid because the value %9 is used after end_apply may have ended the lifetime of the value:

bb1:
  %8 = function_ref @$s4test1SV1xSSvrTwB : $@yield_once @convention(method) (S) -> @yields @guaranteed String9
  (%9, %10) = begin_apply %8(%0) : $@yield_once @convention(method) (S) -> @yields @guaranteed String
  end_apply %10
  yield %9 : $String, resume bb3, unwind bb2

The fix is to move the end_apply to the resume and unwind blocks, after the value has been yielded to the caller.

Resolves rdar://96879247

[tshortli]

@swift-ci please test