add option --dont-merge-with-psf-input to desi_proc and --dont-merge-… #5370

Job	Run time
Test minimal env (ubuntu-latest, 3.10)	1m 43s
Doc test (ubuntu-latest, 3.9)	46s
Test coverage (ubuntu-latest, 3.10, <6, <2, <1.23)	7m 17s
API doc completeness test (ubuntu-latest, 3.9)	22s
Style check (ubuntu-latest, 3.9)	20s
Unit tests (ubuntu-latest, 3.9, ==5.0, ==1.1.6, <1.23)	5m 45s
Unit tests (ubuntu-latest, 3.9, ==5.0, <2, <1.23)	5m 23s
Unit tests (ubuntu-latest, 3.9, <6, ==1.1.6, <1.23)	6m 4s
Unit tests (ubuntu-latest, 3.9, <6, <2, <1.23)	5m 18s
Unit tests (ubuntu-latest, 3.10, ==5.0, ==1.1.6, <1.23)	5m 23s
Unit tests (ubuntu-latest, 3.10, ==5.0, <2, <1.23)	5m 25s
Unit tests (ubuntu-latest, 3.10, <6, ==1.1.6, <1.23)	5m 28s
Unit tests (ubuntu-latest, 3.10, <6, <2, <1.23)	5m 22s
	54m 36s

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