Open using IPFS badge always shown when using IPFS gateway

Description

Open using IPFS badge always shown when using IPFS gateway

Steps to Reproduce

1. new profile
2. launch Brave
3. load ipns://brantly.eth
4. click on Public Gateway
5. in the resulting page (https://brantly-eth.ipns.dweb.link/#/), note the presence of the Open using IPFS badge in the URL bar
6. click on it

Actual result:

Expected result:

Unsure

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.28.27 Chromium: 91.0.4472.120 (Official Build) nightly (x86_64)
Revision	12c5925972cffe578ca7ca7a295e98ee7e178a7a-refs/branch-heads/4472@{#1506}
OS	macOS Version 11.4 (Build 20F71)

/cc @lidel @spylogsster

[lidel]

Agree with @stephendonner – we should hide the badge when we are on a page that belongs to the Gateway selected by the user ( to avoid meaningless/confusing re-open in a new tab).

The test for hiding badge would be:

if (new URL(window.location.origin).host.endsWith(new URL("https://dweb.link").host)) {
   // already on final gateway, hide badge
}

Where https://dweb.link is the public (or local) Gateway used for ipfs:// resolution

[stephendonner]

Verified PASSED using the inline testplan on build

Brave	1.28.54 Chromium: 92.0.4515.81 (Official Build) nightly (x86_64)
Revision	dba3af0a9a48954c8b188bc641e651580b7cb7b5-refs/branch-heads/4515@{#1162}
OS	macOS Version 11.4 (Build 20F71)

Steps:

1. new profile
2. launched Brave
3. loaded ipns://brantly.eth
4. clicked on Public Gateway
5. confirmed I no longer got Open using IPFS badges

example	example

Also tried with https://ipfs.io/ipfs/QmbWqxBEKC3P8tqsKc98xmWNzrzDtRLMiMPL8wBuTGsMnR (badge) -> ipfs://bafybeigdyrzt5sfp7udm7hu76uh7y26nf3efuylqabf3oclgtqy55fbzdi/ (no badge) and https://en.wikipedia-on-ipfs.org/wiki/ (badge) -> ipns://en.wikipedia-on-ipfs.org/wiki/ (no badge)

badge	no badge	badge	no badge