wfe: rename deprecated paths and handlers #7296

Job	Run time
b (go1.23.1_2024-09-05, ./t.sh --lints --generate)	3m 20s
b (go1.23.1_2024-09-05, ./t.sh --lints --generate)	3m 20s
b (go1.23.1_2024-09-05, ./t.sh --integration)	5m 44s
b (go1.23.1_2024-09-05, ./t.sh --integration)	5m 53s
govulncheck	10s
govulncheck	10s
b (go1.23.1_2024-09-05, ./tn.sh --integration)	7m 57s
b (go1.23.1_2024-09-05, ./tn.sh --integration)	7m 57s
b (go1.23.1_2024-09-05, ./t.sh --unit --enable-race-detection)	7m 31s
b (go1.23.1_2024-09-05, ./t.sh --unit --enable-race-detection)	7m 31s
b (go1.23.1_2024-09-05, ./tn.sh --unit --enable-race-detection)	7m 48s
b (go1.23.1_2024-09-05, ./tn.sh --unit --enable-race-detection)	7m 55s
vendorcheck (1.22.5)	31s
vendorcheck (1.22.5)	31s
b (go1.23.1_2024-09-05, ./t.sh --start-py)	2m 54s
b (go1.23.1_2024-09-05, ./t.sh --start-py)	2m 54s
Boulder CI Test Matrix	1s
Boulder CI Test Matrix	1s
	1h 12m 8s

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