Update & expand "glasses"

[frankgrinaert]

Before submitting a new icon contribution, please confirm the following:

• I have searched all issues to make sure there isn't a request for this icon.
• I have searched the current library to make sure the icon doesn't already exist.
• I understand that brand icons are no longer being added and I can use SimpleIcons for my brand icon needs.
• I have followed the Material guidelines for system icons.

Tell us about your contribution.

attempting 2 improvements:

1. make glasses icon more legible (by adding temples, or by switching to Eyeglasses from official Material Symbols)
2. Add glasses-off for "unread", like Microsoft's Glasses Off icon in MS Teams:

Share a preview of your contribution.

some variations:

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Using current glasses from MDI

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Using glasses from MDI with added tongs

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Using Eyeglasses from Material Symbols

Upload the icon source.

glasses.zip