Glossary rule is not applied to source text during translation

[anthonyliangxd]

Describe the bug

When translating German legal reference shorthand to American English with a custom enabled glossary, the glossary mapping for the term AV is never substituted in the output. All other configured glossary abbreviations (anm, Abs, kap) are replaced correctly as expected.

Steps to reproduce

1. Create a DE → EN glossary with the following mappings:

Source (DE)	Target (EN)
AV	General Rule
anm	Note
Abs	para
kap	Chapter

2. Activate this glossary for German to American English translation.
3. Paste the source German input text:
   AV 1 / AV 6 / AV 5 b)\nAnm 1 Abs 1 Kap 39
4. Execute translation and inspect the output.

Expected behavior

All glossary shorthand tokens should be fully replaced:
General Rule 1 / General Rule 6 / General Rule 5 b)\nNote 1 para. 1 Chapter 39

Actual behavior

Only Anm, Abs, Kap are substituted. Every instance of AV remains unmodified in the translated result:
AV 1 / AV 6 / AV 5 b)\nNote 1, para. 1, Chapter 39

[pkarolyi]

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