[Follow up to #43812] Reset button removes all custom rules created via Block element and Manual addition

[hffvld]

Description

Follow-up to #43812

Steps to reproduce

1. Launch Brave
2. Go to https://wikipedia.org
3. Brave Shields > Block element
4. Select any HTML element on the page > Block Element
5. Hamburger menu > Settings > Brave Shields & privacy > Content Filtering
6. Create custom filters > Verify that the HTML element is added to the filter list
7. Add a custom rule using any procedural cosmetic filter or scriplet, for example:

en.m.wikipedia.org###mp-tfa-h2:style(background-color: red !important; color: yellow !important)

8. Close the settings > Refresh the page > Verify that both rules are applied
9. Brave Shields > Block element
10. Tap the Reset button > Observe that both rules are removed
11. Hamburger menu > Settings > Brave Shields & privacy > Content Filtering
12. Create custom filters > Observe that both rules are removed

Actual result

The Reset button removes all custom rules created via Block element and Manual addition.

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Expected result

The Reset button must remove ONLY custom rules created via the Block element feature.

Reproduces how often

Easily reproduced

Brave version

Brave build: 1.77.82
Chromium: 134.0.6998.95 (Official Build) beta (64-bit)

Device

• Brand/model: Pixel 7
• Android version: 16

Channel information

• release (stable)
• beta
• nightly

Reproducibility

• with Brave Shields disabled
• with Brave Rewards disabled
• in the latest version of Chrome

Miscellaneous information

No response

[hffvld]

Closing above because the custom filter wasn't properly created using a procedural cosmetic filter or scriptlets. After creating procedural cosmetic filter everything works as expected.

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