Bug report: Encode_text('UTF-7 (65000)') causes a lot of false-positives in Magic

**Describe the bug**
I see the `Magic` operation list `Encode_text('UTF-7 (65000)')` results with low entropy (giving the if they're good).

I think the magic operation should skip UTF-7 encode operation unless "Extensive language support" is enabled.

Example:


**To Reproduce**
Paste any random hexadecimal string in the input, use the `Magic` operation.

**Expected behaviour**
Operations that have high change of false positives should be avoided by default.

**Desktop:**
- CyberChef version: 10.19.0