fix: issue #1024 exclude name, ensureOnCavas in SVG

[cmumatt]

Description

Fixes issue #1024

This year we added svg-passthrough functionality, which allows unknown properties to be passed through to the SVG output. Around this time, we also renamed most internal Style properties to correspond with the SVG names so most properties could flow right through the renderer into the SVG. This approach eliminated code and make life easier for the Style developer who happens to already be familiar with SVG.

The tradeoff is that we sometimes have properties that are purely internal that we do not want to "leak" into the SVG. This is implemented as an exclusion list in AttrHelper.ts. Issue #1024 observes leakage of two internal-only properties, name and ensureOnCanvas. This PR adds these two properties to the exclusion list to elide them from the SVG output.

Implementation strategy and design decisions

Updated exclusion list in AttrHelper.ts. Updated the rendered diagram set, which now lacks the name and ensureOnCanvas properties in the SVG output. This diagram set is the current means by which we catch unintended changes to rendered properties.

Checklist

• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new ESLint warnings
• I have reviewed any generated changes to the diagrams/ folder

[codecov]

Codecov Report

Merging #1025 (51d7b20) into main (228746e) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1025   +/-   ##
=======================================
  Coverage   63.57%   63.57%           
=======================================
  Files          62       62           
  Lines        7810     7810           
  Branches     1786     1786           
=======================================
  Hits         4965     4965           
  Misses       2729     2729           
  Partials      116      116           

Impacted Files	Coverage Δ
packages/core/src/renderer/AttrHelper.ts	53.61% <100.00%> (ø)

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[samestep]

Thanks for fixing this!