inspector: only write coverage in fully bootstrapped Environments

The NODE_V8_COVERAGE folder and the source map computation are setup
during pre-execution since they rely on environment variables as well
as JS states. Therefore, we need to give up serialization of JS
coverage profiles for Environments that have not go through
pre-execution. Currently this is only possible for Environments
created using the embedder API CreateEnvironment().

As a result we won't have JS coverage data for most cctests, but if
that proves to be necessary we could just run
lib/internal/main/environment.js for these Environments created for
cctests.

Fixes: https://github.com/nodejs/node/issues/32912
Refs: https://github.com/nodejs/node/commit/65e18a8e9f912dfa04a804124b6a19514bb45165
Refs: https://github.com/nodejs/node/commit/5bf43729a403b992cc90b5cdbbaaf505769d1107
https://github.com/nodejs/node/commit/8aa7ef7840ef5f7161f3195e51a3fa6783290160

PR-URL: https://github.com/nodejs/node/pull/32960
Refs: https://github.com/nodejs/node/commit/8aa7ef7840ef5f7161f3195e51a3fa6783290160


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>