Update Swedish translation and correct safety instructions

[NickWick13]

The Swedish language pack still falls back to English for 13 volume-service and Linux privilege messages, and its emergency-unmount warning is missing the latest guidance about other filesystem mounts and processes holding the volume device open. Translate these messages and bring the warning up to date.

Also correct existing safety and recovery instructions: describe outer-volume files as sensitive-looking rather than sensitive, use the English boot-menu labels actually shown by the rescue disk, clarify in-place decryption and password requirements, and restore a space needed when messages are concatenated. Fix several clear grammatical and technical translation errors.

Only Translations/Language.sv.xml changes: 62 entries, with all 1,698 keys retained in their original order. Existing translator metadata is preserved.

Validation:

• Upstream xmlvalidate.sh with fast-xml-parser@4.5.2 passes for the English source and Swedish translation.
• XML schema, key uniqueness and coverage, format placeholders, escape sequences, and accelerator checks pass.
• git diff --check passes; the patch applies to the original and reproduces the updated file byte for byte.

Dialog layout has not been tested in the application.