refactor(web): drop duplicate viewport facts spread in webRuntimeFacts (#1928)

`webRuntimeFacts` spread `viewportRuntimeOperationFacts` twice in the same
object literal. Both spreads declared the same `setViewport` cell — the first
inlined `device.kind === 'device' ? available : openTargetKindUnavailable`,
the second passed `browserDevice`, which is defined as exactly that
expression — so the second silently won and the first was dead.

Keep the `browserDevice` spread, which sits next to the other cells reading
the same value. Behavior-neutral: the resulting facts object is unchanged.

packages/platform-web/src/runtime.ts

@@ -254,9 +254,6 @@ function webRuntimeFacts(
         findText: openTargetKindUnavailable,
         findSelector: openTargetKindUnavailable,
       }),
-      ...viewportRuntimeOperationFacts({
-        setViewport: device.kind === 'device' ? available : openTargetKindUnavailable,
-      }),
       ...screenshotRuntimeOperationFacts({ capture: browserDevice }),
       ...viewportRuntimeOperationFacts({ setViewport: browserDevice }),
       // The web backend has no point-addressed read: `get` answers from the captured DOM tree,