Fix sal encoding-dispatch off-by-one (ISCII removal) + ZapfDingbats table bugs (#488)

Impl_getTextEncodingData() is a positional array indexed by the ABI-frozen
rtl_TextEncoding enum. #i119141 remov

Fix sal encoding-dispatch off-by-one (ISCII removal) + ZapfDingbats table bugs (#488)

Impl_getTextEncodingData() is a positional array indexed by the ABI-frozen
rtl_TextEncoding enum. #i119141 removed the ISCII converter but deleted its
array slot with no NULL placeholder, shifting JAVA_UTF8, ADOBE_STANDARD,
ADOBE_SYMBOL, PT154 and ADOBE_DINGBATS onto the wrong converter. Restore the
NULL slot and add a compile-time size guard.

Wiring ADOBE_DINGBATS correctly surfaced three latent ZapfDingbats table
errors (0x6C→U+25CF; reverse range to U+2797; circled-digits reverse start
0xAC); fix all three. Update rtl_textcvt qa: park the now-unimplemented ISCII
behind TEST_ISCII_DEVANAGARI, correct the ISCII Windows codepage to 57002.

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Fix spelling (#439)

* Fix typos

* Regenerate ignored words list codespell.txt

pre-commit auto remove trailing whitespace from cxx files (#383)

Another big auto clean up. So many lines !!

Another one bites the dust

https://www.youtube.com/watch?v=rY0WxgSXdEE

Co-authored-by:

pre-commit auto remove trailing whitespace from cxx files (#383)

Another big auto clean up. So many lines !!

Another one bites the dust

https://www.youtube.com/watch?v=rY0WxgSXdEE

Co-authored-by: Matthias Seidel <mseidel@apache.org>

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