PPC/s390: [wasm][stack-switching] Support rejected promises

Port e35039e7

Original Commit Message:

    If the returned promise rejects, we switch to the suspender's stack and
    throw the value.
    Re-purpose the WasmOnFulfilled data to also represent the rejecting
    case and rename it to WasmResumeData.

R=thibaudm@chromium.org, joransiu@ca.ibm.com, junyan@redhat.com, midawson@redhat.com
BUG=
LOG=N

Change-Id: Ic9e5b959df90f1041353662dc054a849fea9874e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3721416Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#81328}

src/builtins/ppc/builtins-ppc.cc

@@ -3019,6 +3019,11 @@ void Builtins::Generate_WasmResume(MacroAssembler* masm) {
   __ Trap();
 }
 
+void Builtins::Generate_WasmReject(MacroAssembler* masm) {
+  // TODO(v8:12191): Implement for this platform.
+  __ Trap();
+}
+
 void Builtins::Generate_WasmOnStackReplace(MacroAssembler* masm) {
   // Only needed on x64.
   __ Trap();

src/builtins/s390/builtins-s390.cc

@@ -3013,6 +3013,11 @@ void Builtins::Generate_WasmResume(MacroAssembler* masm) {
   __ Trap();
 }
 
+void Builtins::Generate_WasmReject(MacroAssembler* masm) {
+  // TODO(v8:12191): Implement for this platform.
+  __ Trap();
+}
+
 void Builtins::Generate_WasmOnStackReplace(MacroAssembler* masm) {
   // Only needed on x64.
   __ Trap();