crimson/osd/ops_executer: pass MutFunc by value

Since we now co_await mut_func, we should not pass it by rvalue ref.

```
DEBUG 2024-09-01 15:54:46,212 [shard 0:main] osd - do_osd_ops_execute: object 2:c4c92e5a:::rbd_trash:head submitting txn
=================================================================
==17416==ERROR: AddressSanitizer: stack-use-after-return on address 0x7f590008a430 at pc 0x0000040a367a bp 0x7ffc0b1d5ff0 sp 0x7ffc0b1d5fe0
Address 0x7f590008a430 is located in stack of thread T0 at offset 48 in frame
    #0 0x40b0a2b in crimson::osd::PG::do_osd_ops_execute ... lambda(std::error_code const&)#1}&&)::{lambda()#1}::operator()() const (/usr/bin/ceph-osd+0x40b0a2b)
```

Co-authored-by: Xuehan Xu <xuxuehan@qianxin.com>
Signed-off-by: Matan Breizman <mbreizma@redhat.com>

src/crimson/osd/ops_executer.h

@@ -427,7 +427,7 @@ class OpsExecuter : public seastar::enable_lw_shared_from_this<OpsExecuter> {
     const std::vector<OSDOp>& ops,
     SnapMapper& snap_mapper,
     OSDriver& osdriver,
-    MutFunc&& mut_func) &&;
+    MutFunc mut_func) &&;
   std::vector<pg_log_entry_t> prepare_transaction(
     const std::vector<OSDOp>& ops);
   void fill_op_params(modified_by m);
@@ -513,7 +513,7 @@ OpsExecuter::flush_changes_n_do_ops_effects(
   const std::vector<OSDOp>& ops,
   SnapMapper& snap_mapper,
   OSDriver& osdriver,
-  MutFunc&& mut_func) &&
+  MutFunc mut_func) &&
 {
   const bool want_mutate = !txn.empty();
   // osd_op_params are instantiated by every wr-like operation.