[breeze-icons] New 48px telegram icon
Summary: Since 48px telegram icon was removed in D27787, I made a new one following the official icon.
Test Plan:
256x256 PNG:
In panel with other icons:
Reviewers: VDG, ngraham, ndavis
Reviewed By: VDG, ngraham, ndavis
Subscribers: ngraham, kde-frameworks-devel
Tags: Frameworks
Differential Revision: https://phabricator.kde.org/D27842