Make JPEG strict mode configurable #2460

Job	Run time
test_toolchains (1.85.0)	38s
test_toolchains (beta)	2m 18s
test_toolchains (nightly)	2m 21s
clippy	2m 33s
cargo-deny	20s
rustfmt	10s
test_avif_decoding	1m 39s
test_features (avif)	1m 12s
test_features	51s
test_features (dds)	55s
test_features (exr)	55s
test_features (ff)	57s
test_features (gif)	51s
test_features (pnm)	1m 16s
test_features (tga)	56s
test_features (jpeg)	1m 16s
test_features (bmp)	50s
test_features (ico)	59s
test_features (default)	2m 17s
test_features (png)	54s
test_features (tiff)	59s
test_features (hdr)	43s
test_features (qoi)	56s
test_features (webp)	1m 3s
test_features (rayon)	1m 4s
test_other_archs (i686-unknown-linux-gnu)	2m 59s
test_other_archs (powerpc64-unknown-linux-gnu)	6m 57s
Fuzz targets (afl)	-1s
public_private_dependencies	-1s
build_benchmarks	-1s
Fuzz targets (cargo-fuzz)	-1s
cargo-semver-checks	-1s
	38m 44s

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