inspector: do not hardcode Debugger.CallFrameId in tests

Debugger.CallFrameId is defined as an opaque string [1].

Some tests currently hardcode the value, relying on
undocumented internal details of V8. This makes it hard
for V8 to change the internal representation.

We should instead use the reported call frame id from
the Debugger.paused event directly. This is how every
inspector client does it.

[1] https://chromedevtools.github.io/devtools-protocol/tot/Debugger/#type-CallFrameId

PR-URL: https://github.com/nodejs/node/pull/35570


Reviewed-By: Aleksei Koziatinskii <ak239spb@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Rich Trott <rtrott@gmail.com>