Fix RebaseCustom for TK2 gates #4221

Job	Run time
Check tket library version	22s
Check C++ code formatting	45s
Check documentation build	1m 25s
Build and test (tket) (ubuntu-22.04)	33m 59s
Build and test (tket) (macos-12)	28m 37s
Build and test tket (macos-arm64)	4m 44s
Build and test (tket) (windows-2022)	48m 35s
Build and test pytket (ubuntu)	10m 53s
Build and test (tket)	0s
Build and test (tket)	0s
Build and test pytket (macos-arm64)	3m 58s
Build and test pytket (macos)	16m 31s
Build and test pytket (windows)	39m 22s
Check pytket line and branch coverage	11s
Publish pytket coverage	0s
	3h 9m 22s

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