[BUG] Unexpected automatic closure of non-grouped tabs despite 'Close inactive tabs' being unused

### [BUG] Unexpected automatic closure of non-grouped tabs despite 'Close inactive tabs' being unused

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#### **Issue Description**
I’m experiencing an issue where tabs that are **not** part of any group are being closed automatically. This happens **even when** the "Close inactive tabs" (in-extension) button hasn't been used. It feels like the extension is closing inactive tabs on its own without any triggering action, which is an unexpected behaviour.

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#### **Steps to Reproduce**
1. Install the **TabSort‑DevKay** extension.
2. Open multiple browser tabs.
3. **Do not** group these tabs.
4. Do **not** activate or click the "Close inactive tabs" feature.
5. Leave some tabs idle (inactive) for over 10 minutes.
6. Observe whether these ungrouped tabs get closed automatically.

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#### **Observed Behavior**
- Ungrouped tabs are being automatically closed after being inactive, despite **not using** the "Close inactive tabs" button.

#### **Expected Behavior**
- Tabs that are **not grouped** should remain open, unless the "Close inactive tabs" feature is explicitly activated by the user.

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#### **Additional Context**
This behavior conflicts with how the extension interface communicates the feature expectations. Since "Tab Inactivity Tracking" is described as a feature to automatically close **inactive tabs**, it’s unclear whether this should apply only to tabs within groups or to *all* tabs. The automatic closure of ungrouped, inactive tabs without user consent may lead to data loss or disruption of workflow.