revert(orbit): drop maxPending cap feature, keep suggestion mute

The pending counter desynced from the actual approval list (state.queue
holds approved items as history, so the count never decreased after a
host approve). The host-pushed pendingApprovalCount workaround didn't
hold up under live testing either, so we're rolling the whole cap
feature back rather than ship something flaky.

What's gone:
- OrbitSettings.maxPending + state.pendingApprovalCount
- cap branch in applyOutboxSnapshotsToState (now back to mute-only)
- maxPending number input in settings popover
- pending counter chip in OrbitQueueHead
- 'cap-reached' branch in evaluateOrbitSuggestGate / OrbitSuggestGateReason
- cap-related toasts in ContextMenu / useOrbitSongRowBehavior
- cap-related i18n keys (suggestBlockedCap, settingMaxPending*, pendingCounter*)
- cap CSS (.orbit-queue-head__pending, .orbit-settings-pop__number)

What stays: per-guest suggestion mute (works correctly) and everything
that fed into both features (OrbitState.suggestionBlocked,
setOrbitSuggestionBlocked, evaluateOrbitSuggestGate, the participants
popover Mic/MicOff toggle, the suggestBlockedMuted toast).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/locales/nb.ts

@@ -1590,12 +1590,7 @@ export const nbTranslation = {
     settingAutoShuffleHint: 'Periodisk Fisher-Yates-stokking av kommende kø. Av: rekkefølgen endres bare når du omorganiserer den.',
     settingShuffleInterval: 'Stokk på nytt hver',
     settingShuffleIntervalHint: 'Hvor ofte kommende kø stokkes på nytt mens økten kjører.',
-    settingMaxPending: 'Maks ventende forslag',
-    settingMaxPendingHint: 'Hvor mange gjesteforslag som samtidig kan vente på godkjenning. 0 = ubegrenset.',
-    pendingCounter: '{{count}} / {{max}} venter',
-    pendingCounterTooltip: 'Ventende gjesteforslag / grense',
     suggestBlockedMuted: 'Verten har blokkert deg for denne økten — forslag er av.',
-    suggestBlockedCap: 'Godkjenningskøen er full — vent til verten tar unna noen.',
     settingShuffleIntervalValue_one: '{{count}} min',
     settingShuffleIntervalValue_other: '{{count}} min',
     settingShuffleNow: 'Stokk nå',