Fix `Range#size` return type to `Int32` (#14588) #12283

Job	Run time
check_format	1m 35s
x86_64-gnu-test-preview_mt	5m 32s
deploy_api_docs	1m 59s
x86_64-gnu-test (1.7.3)	34m 24s
x86_64-gnu-test (1.8.2)	32m 58s
x86_64-musl-test	35m 19s
x86_64-gnu-test (1.9.2)	33m 3s
x86_64-gnu-test (1.10.1)	34m 5s
x86_64-gnu-test (1.11.2)	33m 23s
x86_64-gnu-test (1.12.2)	33m 12s
x86_64-gnu-test (1.13.2)	32m 44s
x86_64-gnu-test (1.0.0, FLAGS=-Dwithout_ffi USE_PCRE1=true)	32m 45s
x86_64-gnu-test (1.1.1, FLAGS=-Dwithout_ffi USE_PCRE1=true)	34m 13s
x86_64-gnu-test (1.2.2, USE_PCRE1=true)	35m 14s
x86_64-gnu-test (1.3.2, USE_PCRE1=true)	33m 50s
x86_64-gnu-test (1.4.1, USE_PCRE1=true)	34m 13s
x86_64-gnu-test (1.5.1, USE_PCRE1=true)	34m 35s
x86_64-gnu-test (1.6.2, USE_PCRE1=true)	35m 8s
	8h 38m 12s

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