Remove `wee_alloc` in favor of `rlsf` #9252

Job	Run time
namada-release (ubuntu-latest, 2.4.0, ABCI Release build)	8m 46s
build-wasm (ubuntu-latest, v2, 2.4.0)	4m 25s
test-unit (ubuntu-latest, nightly-2024-05-15, 2.4.0, ABCI)	19m 47s
test-wasm (ubuntu-latest, v2, nightly-2024-05-15, 2.4.0)	7m 27s
test-integration (ubuntu-latest, nightly-2024-05-15, 2.4.0, ABCI)	30m 17s
upload-wasm (ubuntu-latest, v2, nightly-2024-05-15, 2.4.0)	16s
run-benchmarks (ubuntu-latest, nightly-2024-05-15, 2.4.0, ABCI)	28m 43s
namada-e2e (ubuntu-latest, nightly-2024-05-15, 2.4.0, 0.37.2, 0)	22m 48s
namada-e2e (ubuntu-latest, nightly-2024-05-15, 2.4.0, 0.37.2, 1)	12m 9s
namada-e2e (ubuntu-latest, nightly-2024-05-15, 2.4.0, 0.37.2, 2)	7m 11s
namada-e2e (ubuntu-latest, nightly-2024-05-15, 2.4.0, 0.37.2, 3)	26m 15s
namada-e2e (ubuntu-latest, nightly-2024-05-15, 2.4.0, 0.37.2, 4)	13m 33s
namada-e2e (ubuntu-latest, nightly-2024-05-15, 2.4.0, 0.37.2, 5)	13m 20s
	3h 14m 57s

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