Tooltip for Wallet icon on toolbar should probably read Brave Wallet

[stephendonner]

Description

Steps to Reproduce

1. install 1.39.86
2. launch Brave
3. hover over the Wallet icon in the browser toolbar
4. hover over the Wallet icon

Actual result:

Brave Wallet tooltip in Sidebar	Wallet tooltip on browser toolbar

Expected result:

Perhaps, for consistency's sake, should read Brave Wallet; see #21864

Reproduces how often:

100%

Brave version (brave://version info)

Brave	1.39.86 Chromium: 101.0.4951.41 (Official Build) beta (x86_64)
Revision	93c720db8323b3ec10d056025ab95c23a31997c9-refs/branch-heads/4951@{#904}
OS	macOS Version 11.6.5 (Build 20G527)

cc @aguscruiz @jamesmudgett @MadhaviSeelam