`Save all files` button should be disabled until `Start`

Description

Save all files button should be disabled until Start

Steps to Reproduce

1. install 1.44.60
2. launch Brave
3. load https://webtorrent.io/free-torrents
4. click on the magnet link for any of the files
5. in the resulting WebTorrent view, look at the Save all files button

Actual result:

Save all files button is enabled, but doesn’t do anything (until after you start the torrent)

Expected result:

Save all files button should be disabled until after you’ve started the torrent

Reproduces how often:

Brave version (brave://version info)

Brave	1.44.60 Chromium: 105.0.5195.37 (Official Build) nightly (x86_64)
Revision	5f67e9f258cc28ab970e57572290edf1863ee3c5-refs/branch-heads/5195@{#621}
OS	macOS Version 13.0 (Build 22A5321d)

Version/Channel Information:

• Can you reproduce this issue with the current release?
• Can you reproduce this issue with the beta channel?
• Can you reproduce this issue with the nightly channel?

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 @fallaciousreasoning

[stephendonner]

Verified PASSED using

Brave	1.47.110 Chromium: 108.0.5359.71 (Official Build) beta (x86_64)
Revision	1e0e3868ee06e91ad636a874420e3ca3ae3756ac-refs/branch-heads/5359@{#1016}
OS	macOS Version 13.1 (Build 22C5059b)

Torrent file:

default	in-progress	complete	save all files

Magnet link:

default	in-progress	complete	save all files

[panoplied]

@fallaciousreasoning unable to add you as a reviewer, but check the PR #https://github.com/brave/brave-core/pull/14977