fix: handle content-type headers with charset

[anmonteiro]

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Summary

Fixes #4237

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[github-actions]

📊 Benchmark results

Comparing with ef9e536

Package size: 440 MB

⬇️ 0.00% decrease vs. ef9e536

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└───┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴────┴──┴──>
    T-12    T-11    T-10    T-9     T-8     T-7     T-6     T-5     T-4     T-3     T-2     T-1      T    

Legend

• T-30 (ef9e536): 440 MB
• T-29 (072b624): 440 MB
• T-28 (6c0d4ce): 440 MB
• T-27 (7b4d676): 440 MB
• T-26 (1e4efff): 441 MB
• T-25 (865b699): 377 MB
• T-24 (2d6a10c): 377 MB
• T-23 (aae2e53): 377 MB
• T-22 (333c5d9): 377 MB
• T-21 (2193d1c): 377 MB
• T-20 (088af01): 377 MB
• T-19 (69f6465): 377 MB
• T-18 (ac4cd23): 377 MB
• T-17 (fbd9156): 377 MB
• T-16 (b6345b7): 377 MB
• T-15 (1634aa4): 377 MB
• T-14 (fce24e7): 377 MB
• T-13 (9975b53): 377 MB
• T-12 (76b6206): 377 MB
• T-11 (1bf95f2): 377 MB
• T-10 (b830b8f): 377 MB
• T-9 (454e4d1): 377 MB
• T-8 (06f0d95): 377 MB
• T-7 (a1dc7a4): 368 MB
• T-6 (3ebfea9): 368 MB
• T-5 (127a1c6): 368 MB
• T-4 (12713ca): 368 MB
• T-3 (6424921): 368 MB
• T-2 (9902ec0): 368 MB
• T-1 (fb4fd7a): 368 MB
• T (current commit): 440 MB

[ascorbic]

looks good!