[#1411] Refactor AccountBalance to use Balance for transparent funds #6036

Job	Run time
Build target wasm32-wasi	57s
Latest build on ubuntu-latest	2m 9s
Check ZFuture build on Linux	23s
Latest build on windows-latest	4m 25s
Check ZFuture build on macOS	45s
Latest build on macOS-latest	1m 45s
Bitrot check	1m 37s
Check ZFuture build on Windows	3m 4s
Clippy (beta)	15s
Clippy (MSRV)	1m 26s
Code coverage	1h 8m 38s
Intra-doc links	2m 19s
Rustfmt	18s
protobuf consistency	1m 3s
UUID validity	3s
Test on Linux	6m 12s
Test Orchard on Linux	7m 43s
Test NU7 on Linux	6m 6s
Test on macOS	9m 7s
Test Orchard on macOS	11m 30s
Test on Windows	12m 4s
Test Orchard on Windows	16m 21s
Test NU7 on Windows	12m 36s
Required status checks have passed	3s
	2h 50m 49s

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