Rename "Restore All" to "Clear Excluded List" in ac

[srirambv]

Description

With #3459 implementation excluded site isn't restored when you click on Restore all so the term Restore all is quite confusing and doesn't really make sense. Since we are removing sites from the db for that month, renaming to Clear Exclude List makes more sense.

Steps to Reproduce

1. Install 0.64.x build
2. Visit a site and add to ac list
3. Exclude site, ensure Restore all message is shown
4. Click Restore all, nothing gets restored as its removed from db

Actual result:

Go into think mode of simpler times when restore meant bringing back something that was gone

Expected result:

Clear means remove, restore means bring back

Reproduces how often:

Easy

Brave version (brave://version info)

Brave	0.64.76 Chromium: 74.0.3729.157 (Official Build) (64-bit)
Revision	7b16107ab85c5364cdcd0b2dea2539a1f2dc327a-refs/branch-heads/3729@{#998}
OS	Linux

Version/Channel Information:

• Can you reproduce this issue with the current release?
  Yes because we released with this bug
• Can you reproduce this issue with the beta channel?
  Should be
• Can you reproduce this issue with the dev channel?
  Definitely
• Can you reproduce this issue with the nightly channel?
  Undoubtedly

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields?
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome?

Miscellaneous Information:

cc: @NejcZdovc @mandar-brave @brave/legacy_qa

[GeetaSarvadnya]

Verification PASSED on

Brave | 1.45.75 Chromium: 106.0.5249.65 (Official Build) beta (64-bit)
-- | --
Revision | 3269dc3633cdd2ab94546fdbe54962e45b17a6e0-refs/branch-heads/5249@{#580}
OS | Windows 10 Version 21H2 (Build 19044.2006)

• Verified the test plan from Rewards AC exclusions text changes. brave-core#15029
• Confirmed "Restore All" is replaced with "Clear exclude list"
• Confirmed "Restore this site" tooltip text is replaced with "Remove from excluded"

Example	Example

[LaurenWags]

Verified on Google Pixel 3 XL with Android 12 running 1.45.100

• Confirmed updated wording on the AC sites popup for both the link and tooltip text