chore: cleanup strings

[philmoz]

Changes:

• Delete unused translation strings.
• Use STR_xx names in code (not TR_xxx).
• Move sensor names to telemetry folder (not translated).
• Simplify handling of untranslated strings.
• Update fonts.

[Copilot]

Pull request overview

This PR refactors the radio firmware’s string/translation handling by removing unused translation keys, standardizing on STR_* identifiers in code, and moving telemetry sensor “names” into a non-translated header, alongside an update to Hebrew LVGL font assets.

Changes:

• Removed the separate “not translated” string list and cleaned up unused translation keys across multiple locales.
• Updated telemetry and UI call-sites to use STR_* names consistently, and introduced sensor_names.h for non-translated telemetry sensor labels.
• Updated LVGL Hebrew font data and mappings.

Reviewed changes

Copilot reviewed 60 out of 136 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
radio/src/translations/translations.h	Removes string_list_notrans.h usage and consolidates string declarations.
radio/src/translations/translations.cpp	Cleans up language include ordering and removes no-longer-used notrans string handling.
radio/src/translations/string_list.h	Removes unused keys, reorders some entries, and adds CHR_INPUT as a string.
radio/src/translations/string_list_notrans.h	Deletes the legacy “not translated” string list.
radio/src/translations/simstr.m4	Adds regeneration instructions for sim_string_list.h.
radio/src/translations/i18n/pt.h	Removes unused translation definitions and updates TR_CHR_INPUT to a string literal.
radio/src/translations/i18n/nl.h	Removes unused translation definitions and updates TR_CHR_INPUT to a string literal.
radio/src/translations/i18n/fi.h	Removes unused translation definitions and updates TR_CHR_INPUT to a string literal.
radio/src/translations/i18n/es.h	Removes unused translation definitions and updates TR_CHR_INPUT to a string literal.
radio/src/translations/i18n/en.h	Removes unused translation definitions and updates TR_CHR_INPUT to a string literal.
radio/src/telemetry/telemetry.cpp	Includes sensor_names.h to use non-translated RX stat labels/units.
radio/src/telemetry/sensor_names.h	Adds centralized non-translated telemetry sensor name constants (new file).
radio/src/telemetry/mlink.cpp	Switches MLink sensor naming from translation indirection to non-translated constants.
radio/src/telemetry/hott.cpp	Switches HoTT sensor naming from translation indirection to non-translated constants.
radio/src/telemetry/hitec.cpp	Switches Hitec sensor naming from translation indirection to non-translated constants.
radio/src/telemetry/ghost.cpp	Switches Ghost sensor naming from translation indirection to non-translated constants.
radio/src/telemetry/frsky_sport.cpp	Includes sensor_names.h for non-translated sensor labels.
radio/src/telemetry/frsky_d.cpp	Switches FrSky D sensor naming from translation indirection to non-translated constants.
radio/src/telemetry/flysky_nv14.cpp	Switches FlySky NV14 sensor naming from translation indirection to non-translated constants.
radio/src/telemetry/flysky_ibus.cpp	Switches FlySky iBus sensor naming from translation indirection to non-translated constants.
radio/src/telemetry/crossfire.cpp	Switches Crossfire sensor naming from translation indirection to non-translated constants.
radio/src/hal/rgbleds.h	Updates comment to reference STR_* naming.
radio/src/gui/common/stdlcd/draw_functions.cpp	Uses STR_CHR_INPUT string instead of a single CHR_INPUT char.
radio/src/gui/colorlcd/widgets/value.cpp	Introduces a local STR_V alias for the voltage unit string.
radio/src/gui/212x64/view_statistics.cpp	Switches from TR_TIME to STR_TIME.
radio/src/gui/212x64/model_setup.cpp	Replaces remaining TR_* usage with STR_* in warning info length calculation and AFHDS3 label.
radio/src/gui/128x64/model_setup.cpp	Replaces TR_* usage with STR_* for telemetry-type label and AFHDS3 label.
radio/src/fonts/lvgl/std/lv_font_he_XXS.c	Updates compressed Hebrew XXS font payload and cmap metadata.
radio/src/fonts/lvgl/std/lv_font_he_STD.c	Updates Hebrew STD font glyph set (drops niqqud marks) and adjusts cmap/metrics.
radio/src/fonts/lvgl/sml/lv_font_he_XXS.c	Updates compressed Hebrew XXS (small) font payload and cmap metadata.
radio/src/fonts/lvgl/sml/lv_font_he_STD.c	Updates Hebrew STD (small) font glyph set and adjusts cmap/metrics.
radio/src/fonts/lvgl/sml/lv_font_he_L.c	Updates compressed Hebrew L (small) font payload and cmap metadata.
radio/src/fonts/lvgl/lrg/lv_font_he_STD.c	Updates Hebrew STD (large) font glyph set/cmap to match new range selection.
radio/src/edgetx.h	Updates comment to reference STR_CURRENT_VERSION.
radio/src/edgetx.cpp	Fixes a remaining TR_TEST_NOTSAFE usage to STR_TEST_NOTSAFE.

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