i18n(tr-TR): improve Turkish translations - increase coverage and fix typos/terminology errors (open-webui#22544)

* i18n: complete Turkish translations for {{}} placeholder strings

* i18n(tr-TR): fix multiple translation errors

* i18n(tr-TR): add missing translations for Y section

* i18n(tr-TR): add missing translations for Model section

* i18n(tr-TR): add missing Turkish translations for Image section

* i18n(tr-TR): translate Knowledge section strings in Turkish

* i18n(tr-TR): translate upload-related strings in Turkish

* 18n: translate Invalid error messages to Turkish.

* i18n(tr-TR):add Turkish translations for Enter input fields

* i18n(tr-TR): add missing translations for "No" strings

* i18n(tr-TR): replace "istem" with "prompt" for consistency

* i18n(tr-TR): standardize "ID" terminology in Turkish translations

* i18n(tr-TR): add missing translations for "S" strings

* i18n(tr-TR): add missing translations for basic UI and navigation element

* i18n(tr-TR): add missing translations for C-D sections

* i18n(tr-TR): add missing translations for E-F sections

* i18n(tr-TR): standardize "Chunk" terminology to "Parça"

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Co-authored-by: MSI I9 12900KS RTX <alifurkanstahl@users.noreply.github.com>

Author: alifurkanstahl