fix(devicemanager): percision -> precision in motion calibration

[mvanhorn]

Summary

Closes #10856. The device status panel rendered "Measuring motion percision" and "Enhancing motion percision" during motion calibration (cases 36/37 in src/slic3r/GUI/DeviceManager.cpp:162,164). The intended word is precision. This PR fixes the source strings and updates the msgid keys in all 18 bbl/i18n/*.po files to match, so existing msgstr translations still resolve via gettext lookup.

Why this matters

These two strings are visible to every user who triggers motion calibration, so the typo is high-visibility in the device status panel. Updating only DeviceManager.cpp would silently break the gettext lookup for every translated locale (the existing msgid "Measuring motion percision" entries no longer match the corrected source, so gettext falls back to English and translators' work is dropped on the floor until the next extraction cycle).

Updating the msgid key on each .po file at the same time as the source keeps the existing msgstr translations attached to the corrected source string. Translators don't have to redo their work, and non-English users keep seeing translated text instead of falling back to the corrected English.

Changes

• src/slic3r/GUI/DeviceManager.cpp:162,164 - percision -> precision in both _L(...) calls.
• bbl/i18n/{cs,de,en,es,fr,hu,it,ja,ko,nl,pl,pt_BR,ru,sv,tr,uk,zh_CN,zh_TW}/BambuStudio_*.po - msgid keys updated to match. 18 files, 2 lines each.

Total: 19 files, 38 added + 38 deleted lines. Mechanical search-and-replace of two exact strings.

How to test

$ grep -rln "percision" --include="*.cpp" --include="*.po" --include="*.json" --include="*.h" .
(empty)
$ grep -n "Measuring motion precision\|Enhancing motion precision" src/slic3r/GUI/DeviceManager.cpp
162:        return _L("Measuring motion precision");
164:        return _L("Enhancing motion precision");

The 18 .po files each have two updated msgid lines; the matching msgstr translations are untouched.

Fixes #10856

AI-assisted.