Call a tablet a tablet in "Play on"

[hatstand]

Playing on this device, "Play on" said "(this phone)" and showed a phone icon even on a tablet. On a tablet (smallest width at least 600dp) it now says "(this tablet)" with a tablet icon, as iOS already says "(this iPad)". The icon changes on the output button and the player's "Playing on" line too.

Android only: iOS already does this.

Test: OutputSheetTest.aTabletIsCalledATablet, run at sw600dp. Not built here: the session had no Android SDK, so CI is the first build.

This touches the same lines of OutputSheet.kt as the PR from claude/nifty-ramanujan-c2i3zy, so whichever merges second needs a small conflict resolved.

🤖 Generated with Claude Code

https://claude.ai/code/session_01CTf1Z6GAbDbQeNJ5BkewC1

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[github-actions]

Store screenshots

From run 37350146299, against clementine-it. Left: the store listing of the latest release, v13.7, which shows the dark theme. Right: this pull request, dark and light.

Screen	v13.7	This PR, dark	This PR
1_player
2_library
2_library_album
3_playlist
4_search
5_connection
6_connect
10_internet	–
11_internet_radio	–
settings	–

[hatstand]

integration failed in ClementineIntegrationTest.globalSearchFindsLibrarySongs, but not because of this PR. The library results came back. The test then waits up to 15 s for GlobalSearchFinished, which Clementine only sends once every internet radio search provider has answered, and those query live services. In this run SomaFM's request failed (SSL handshake failed: The issuer certificate of a locally looked up certificate could not be found), and the search hadn't finished in time.

This PR only changes the "Play on" label and icon, which this test never touches, and the same test passed on #325 and #327 in the same hour.

I've re-run the failed job once. If it fails the same way again, I'll treat it as a real problem with the test's dependence on outside services (not something to fix in this PR) and say so here.

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