src: fix clang 14 linker error

Compiling with clang 14 on Ubuntu was failing with the following error:

```bash
$ CXX=clang++ CC=clang ./configure --ninja
$ make
<snip>
[7/14] LINK cctest
FAILED: cctest
clang++ <snip>
/usr/bin/ld: obj/src/inspector/libnode.node_string.o: in function `node::inspector::protocol::StringUtil::StringViewToUtf8[abi:cxx11](v8_inspector::StringView)':
node_string.cc:(.text+0x2ce): undefined reference to `node::MaybeStackBuffer<char, 1024ul>::AllocateSufficientStorage(unsigned long)'
/usr/bin/ld: obj/src/inspector/libnode.node_string.o: in function `node::inspector::protocol::StringUtil::fromUTF16[abi:cxx11](unsigned short const*, unsigned long)':
node_string.cc:(.text+0xad9): undefined reference to `node::MaybeStackBuffer<char, 1024ul>::AllocateSufficientStorage(unsigned long)'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
```

I bisected it to the referenced PR. This change includes the header file
which defines `node::MaybeStackBuffer::AllocateSufficientStorage`.

Refs: nodejs#46817

src/inspector/node_string.cc

@@ -2,6 +2,7 @@
 #include "node/inspector/protocol/Protocol.h"
 #include "node_util.h"
 #include "simdutf.h"
+#include "util-inl.h"
 
 namespace node {
 namespace inspector {