[BUG] SVG backend does not support line dash offset #11058
Description
Demonstrated by CI test image bokehjs/test/baselines/linux/Line_glyph__should_support_dashed_lines_with_offsets.png on all OS/platform combinations.
Each set of 4 dashed lines with the same color has offsets of 0, 5, 10, -10. These offsets are handled correctly by canvas and webgl backends but not svg.
Fix available soon.