Default transcript dumping in "statistics dump" to false (#145436)
### Summary
Currently, if the setting `interpreter.save-transcript` is enabled,
whenever we call "statistics dump", it'll default to reporting a huge
list of transcripts which can be a bit noisy. This is because the
current check `GetIncludeTranscript` returns `!GetSummaryOnly()` by
default if no specific transcript-setting option is given in the
statistics dump command (ie. `statistics dump --transcripts=false` or
`statistics dump --transcripts=true`). Then when
`interpreter.save-transcript` is enabled, this saves a list of
transcripts, and the transcript list ends up getting logged by default.
These changes default the option to log transcripts in the `statistics
dump` command to "false". This can still be enabled via the
`--transcripts` option if users want to see a transcript. Since
`interpreter.save-transcript` is false by default, the main delta is
that if `interpreter.save-transcript` is true and summary mode is false,
we now disable saving the transcript.
This also adds a warning to 'statistics dump --transcript=true' when
interpreter.save-transcript is disabled, which should help users
understand
why transcript data is empty.
### Testing
#### Manual testing
Tested with `settings set interpreter.save-transcript true` enabled at
startup on a toy hello-world program:
```
(lldb) settings set interpreter.save-transcript true
(lldb) target create "/home/qxy11/hello-world/a.out"
Current executable set to '/home/qxy11/hello-world/a.out' (x86_64).
(lldb) statistics dump
{
/* no transcript */
}
(lldb) statistics dump --transcript=true
{
"transcript": [
{
"command": "statistics dump",
"commandArguments": "",
"commandName": "statistics dump",
"durationInSeconds": 0.0019650000000000002,
"error": "",
"output": "{...
},
{
"command": "statistics dump --transcript=true",
"commandArguments": "--transcript=true",
"commandName": "statistics dump",
"timestampInEpochSeconds": 1750720021
}
]
}
```
Without `settings set interpreter.save-transcript true`:
```
(lldb) target create "/home/qxy11/hello-world/a.out"
Current executable set to '/home/qxy11/hello-world/a.out' (x86_64).
(lldb) statistics dump
{
/* no transcript */
}
(lldb) statistics dump --transcript=true
{
/* no transcript */
}
warning: transcript requested but none was saved. Enable with 'settings set interpreter.save-transcript true'
```
#### Unit tests
Changed unit tests to account for new expected default behavior to
`false`, and added a couple new tests around expected behavior with
`--transcript=true`.
```
lldb-dotest -p TestStats ~/llvm-sand/external/llvm-project/lldb/test/API/commands/statistics/basic/
```
llvm-project
5c310d1e - Default transcript dumping in "statistics dump" to false (#145436)
