Add support for transparent-source-only (TEX) addresses #4973

Job	Run time
Check ZFuture build on Linux	25s
Test on Linux	9m 22s
Check ZFuture build on macOS	1m 17s
Test Orchard on Linux	4m 55s
Bitrot check	2m 53s
Latest build on ubuntu-latest	1m 5s
Test NU6 on Linux	9m 12s
Check ZFuture build on Windows	1m 28s
Latest build on windows-latest	4m 32s
Test on macOS	23m 19s
Build target wasm32-wasi	2m 31s
Latest build on macOS-latest	2m 14s
Test Orchard on macOS	11m 18s
Test on Windows	13m 8s
Clippy (MSRV)	3m 0s
Clippy (beta)	13s
Code coverage	19m 26s
Test Orchard on Windows	9m 41s
Intra-doc links	3m 39s
Test NU6 on Windows	14m 12s
Rustfmt	14s
protobuf consistency	2m 54s
UUID validity	4s
	2h 21m 2s

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