Keep corner tick line thickness at a fixed 1px, not scaled to 2x

tick_size (the bracket's overall footprint/position) still scales with
`scale` so the ticks sit correctly in the corners at either resolution,
but line_thickness is pinned to 1px per request rather than growing to
match -- the ticks stay crisp/thin at 2x instead of thickening.

subwave_nowplaying.star

@@ -731,7 +731,7 @@ def _glitch_scanlines(scale):
 
 def _glitch_corner_ticks(color, scale):
     tick_size = 5 * scale
-    line_thickness = scale  # was a fixed 1px; scaled so the bracket's own weight stays proportional
+    line_thickness = 1  # kept at a crisp 1px at every scale, per request, rather than growing to `scale`
 
     # A single tick shape (two short perpendicular lines) always draws
     # the same way regardless of which corner it's placed in -- it has no