llm: Clarify @Suppress("MaxLineLength") usage in testing skill (#6685)

.claude/skills/testing-android-code/SKILL.md

@@ -263,6 +263,7 @@ Common testing mistakes in Bitwarden. **For complete details and examples:** See
 - **Null stream testing** - Test null returns from ContentResolver operations
 - **bufferedMutableSharedFlow** - Use with `.onSubscription { emit(state) }` in Fakes
 - **Test factory methods** - Accept domain state types, not SavedStateHandle
+- **@Suppress("MaxLineLength")** - Only add when the `fun` declaration line **actually exceeds 100 chars** — do not copy the pattern blindly
 
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