[mono] Update attribute name used for controlling frame pointer elimination (#59069)

LLVM 8 introduced `"frame-pointer"="all"` as a substitute for
`"no-frame-pointer-elim"="true"`. LLVM 10 outright removed
`"no-frame-pointer-elim"`.

Fixes #58998.

Author: imhameed

src/mono/mono/mini/mini-llvm.c

@@ -11478,7 +11478,7 @@ emit_method_inner (EmitContext *ctx)
 	mono_llvm_add_func_attr (method, LLVM_ATTR_UW_TABLE);
 
 	if (cfg->disable_omit_fp)
-		mono_llvm_add_func_attr_nv (method, "no-frame-pointer-elim", "true");
+		mono_llvm_add_func_attr_nv (method, "frame-pointer", "all");
 
 	if (cfg->compile_aot) {
 		if (mono_aot_is_externally_callable (cfg->method)) {