inspector: always set process.binding('inspector').callAndPauseOnStart

Since `process.binding('inspector')` is loaded during bootstrap,
simply set `process.binding('inspector').callAndPauseOnStart`
unconditionally instead of relying on `agent->WillWaitForConnect()`
which depends on runtime states,

PR-URL: https://github.com/nodejs/node/pull/26793


Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>