Playlist - Update empty state illustration

[aguscruiz]

Description

There's a new illustration to replace the current empty state illustration.

Design is here:
https://www.figma.com/design/RxyQnpxi9qtf5HmnAj1yH0/Desktop-Playlist?node-id=1937-23814&t=KJiHZ1Lv2ctgFrkT-1

Steps to reproduce

Actual result

Expected result

Reproduces how often

Easily reproduced

Brave version (brave://version info)

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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