chore: unify Makefile build and clippy into single cargo invocations

[JereSalo]

The build and clippy targets split testing-remote-prover into a separate cargo command because it used a different miden-tx version. That's no longer the case, there's a single version in Cargo.lock, so everything can run in one invocation.

Running separate commands causes cargo to re-resolve features between invocations, invalidating cached artifacts and recompiling shared dependencies. Of 503 unique crates, 116 get compiled twice and 45 get compiled three times, adding 206 redundant compilations (116 + 45*2).

Benchmarks (M4 Max, same commit, sequential, cargo clean before each):

	Before (3 commands)	After (1 command)	Improvement
Total compilations	709	503	-29%
Redundant compilations	206	0	-100%
Wall time	4m 14s	2m 50s	-33%

[igamigo]

LGTM I think I had pushed a similar change to #1891