hoistingLimits - optimize hoisting when transitive dependency matches root one

[Knagis]

This PR follows up on #7189 - this version makes sure that the transitive dependencies are still hoisted up to the hoist border.

It also adds a skipped unit test for potential future fix - when a transitive dependency matches the root one, it can be "hoisted" to root - it isn't hoisting since the dependency already exists. The PR does not include an implementation for this scenario.

Resolves #6662

[larixer]

@Knagis Thank you for the followup PR! Does it handle root workspace only or does it support non-root workspaces too?

[Knagis]

i think this should work with either, it doesn't add any special meaning to root, instead it makes all hoist border nodes unique.

[larixer]

I see, good idea! Thank you, looks good!

[larixer]

@arcanis has found an issue introduced by this PR that blocks its merging:

https://github.com/yarnpkg/berry/actions/runs/27975705591/job/82793047165?pr=7196

   ➤ YN0000: · Yarn 0.0.0
   ➤ YN0000: ┌ Resolution step
   ➤ YN0000: └ Completed
   ➤ YN0000: ┌ Fetch step
   ➤ YN0000: └ Completed
   ➤ YN0000: ┌ Link step
   ➤ YN0001: │ RangeError: Maximum call stack size exceeded

     163660 |     };
     163661 |     const seenNodes = /* @__PURE__ */ new Map([[tree, treeCopy]]);
   > 163662 |     const addNode = (node, parent, parentNode) => {
            |                     ^
     163663 |       const isHoistBorder = options2.hoistingLimits.get(parentNode.locator)?.has(node.name) || false;
     163664 |       let workNode = parent === node ? parentNode : isHoistBorder ? void 0 : seenNodes.get(node);
     163665 |       const isSeen = !!workNode;

     at addNode (../yarnpkg-cli/bundles/yarn.js:163662:21)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     at addNode (../yarnpkg-cli/bundles/yarn.js:163693:11)
     ➤ YN0000: └ Completed
     ➤ YN0000: · Failed with errors
     ```

[larixer]

Could you please fix failing integration tests?