Improve dom walker algorithm

[thetarnav]

Fixes #342
Fixes #339

Changes the algorithm for mapping elements in dom tree mode.

Before it mapped elements (the whole elements tree) before mapping children, and then children were checking if their elements already exit in parents tree, and appending themselves to that tree in place of found element and returning null from mapOwner function to not be added to the owner tree again.

The new algorithm maps the children normally before the elements, so now the elements are handled depth-first. Each owner traverses over the two trees—element and children—to find where in the element tree the children should be moved or if the elements can be safely pushed to the owner.children directly.

[changeset-bot]

🦋 Changeset detected

Latest commit: ea6c1c2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@solid-devtools/debugger	Minor
@solid-devtools/extension	Patch
@solid-devtools/frontend	Patch
@solid-devtools/logger	Patch
solid-devtools	Patch
@solid-devtools/overlay	Patch

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