Write out correlations when `--create-matrices` doesn't include "all"

[tsalo]

Closes none, but addresses a bug identified in https://neurostars.org/t/filenotfounderror-no-bold-data-found-in-allowed-spaces-fslr/30968.

Changes proposed in this pull request

• Set config.execution.output_correlations to True when exact scans are provided through --create-matrices, but "all" is not included.

[tsalo]

It looks like this might require a bit more thought.

[tsalo]

Maybe I can just force dcan_correlation_lengths to be ["all"] for linc mode and drop output_correlations?

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 72.72727% with 9 lines in your changes missing coverage. Please review.

Project coverage is 78.96%. Comparing base (e19b7b1) to head (ff1308f). Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
xcp_d/workflows/bold/concatenation.py	0.00%	7 Missing and 1 partial :warning:
xcp_d/workflows/bold/connectivity.py	50.00%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1326 +/- ## ========================================== - Coverage 79.03% 78.96% -0.08% ========================================== Files 59 59 Lines 7408 7406 -2 Branches 961 962 +1 ========================================== - Hits 5855 5848 -7 - Misses 1261 1268 +7 + Partials 292 290 -2 ```

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