Fix regression with container nodes

[DylanPiercey]

Description

Fixes a regression from https://github.com/marko-js/marko/pull/1375/files#diff-73897f1fa5eecec95203fcfbe9e5832eR112. It turns out that the existing behavior of using the same container node instance is relied on and that change causes some nodes to act as if they were removed.

This PR fixes the regression by reusing the array container instance and just changing the owner node.

Checklist:

• I have read the CONTRIBUTING document and have signed (or will sign) the CLA.
• I have updated/added documentation affected by my changes.
• I have added tests to cover my changes.

[codecov]

Codecov Report

Merging #1380 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1380      +/-   ##
==========================================
- Coverage   90.59%   90.59%   -0.01%     
==========================================
  Files         342      342              
  Lines       12495    12494       -1     
==========================================
- Hits        11320    11319       -1     
  Misses       1175     1175

Impacted Files	Coverage Δ
src/compiler/ast/Node.js	96.27% <100%> (-0.02%)	⬇️

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