Partial source fixes

[kaleidawave]

• Fix partial syntax loop (added test)
• Fix issue in code_blocks_to_script
• Add diagnostics counting to code_blocks_to_script
• Also remove >1 empty line printing
• Fixing some .unwraps on number parsing
• Fix some small checker issues

[kaleidawave]

Finding some useful issues! Thanks @jasikpark

thread '<unnamed>' panicked at /home/runner/work/ezno/ezno/checker/src/features/operations.rs:315:66:
called `Result::unwrap()` on an `Err` value: ()
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
==3550== ERROR: libFuzzer: deadly signal
NOTE: libFuzzer has rudimentary signal handlers.
      Combine libFuzzer with AddressSanitizer or similar for better crash reports.
SUMMARY: libFuzzer: deadly signal
MS: 5 ShuffleBytes-InsertByte-ChangeBit-ChangeBinInt-PersAutoDict- DE: "Map"-; base unit: 2b7c63bc5683fba15a7fe71e68d81b68d7ac0d5f
0x4d,0x61,0x70,0x3c,0x35,0x35,0xb4,
Map<55\264
artifact_prefix='/home/runner/work/ezno/ezno/checker/fuzz/artifacts/check_project_naive/'; Test unit written to /home/runner/work/ezno/ezno/checker/fuzz/artifacts/check_project_naive/crash-c51c16d192276b1f6b393ab9801a0651ae97267c
Base64: TWFwPDU1tA==

────────────────────────────────────────────────────────────────────────────────

Failing input:

    artifacts/check_project_naive/crash-c51c16d192276b1f6b393ab9801a0651ae97267c

Output of `std::fmt::Debug`:

    "Map<55"

From https://github.com/kaleidawave/ezno/actions/runs/10468094080/job/28988257120?pr=190#step:8:2706