修正当激活指定子节点时，对应父节点应全部展开

[Tony-ST0754]

refactor: 重构展开逻辑，当激活指定子节点时，对应父节点应全部展开

Link issues

fixes #8185

Summary By Copilot

Regression?

• Yes
• No

Risk

• High
• Medium
• Low

Verification

• Manual (required)
• Automated

Packaging changes reviewed?

• Yes
• No
• N/A

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• Merge the latest code from the main branch

Summary by Sourcery

Adjust node expansion behavior so that activating a specified child node results in it being treated consistently as expanded rather than reverting to a collapsed state.

Bug Fixes:

• Ensure child nodes remain expanded when activated even if previously marked as collapsed.

Enhancements:

• Simplify expand state handling by removing redundant collapsed state check during expansion.

[bb-auto]

Thanks for your PR, @Tony-ST0754. Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Refactors the expand-state handling so that when a node is marked as expanded, it is no longer forcibly re-collapsed based on the collapsed cache, aligning behavior with "expand all when activating a specified child node".

Sequence diagram for updated node expansion logic in CheckExpandAsync

sequenceDiagram
    participant TreeComponent
    participant ExpandableNodeCache
    participant CollapsedNodeCache
    participant ExpandedNodeCache

    TreeComponent->>ExpandableNodeCache: CheckExpandAsync(node, expandCallback)
    alt node.IsExpand is true
        ExpandableNodeCache->>ExpandedNodeCache: Add(node.Value)
        note over ExpandableNodeCache,CollapsedNodeCache: CollapsedNodeCache.Contains no longer called
    else node.IsExpand is false
        note over ExpandableNodeCache: No change to caches
    end

Loading

File-Level Changes

Change	Details	Files
Adjust expand-state logic so that an expanded node is always treated as expanded, regardless of any previous collapsed cache state.	Removed the conditional check that re-collapsed a node if its value was present in the collapsed-node cache while IsExpand was true. Ensured that when a node is marked as expanded, its value is added to the expanded-node cache without toggling IsExpand back to false based on the collapsed cache.	src/BootstrapBlazor/Misc/ExpandableNodeCache.cs

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#8185	Ensure that when a TreeView node is programmatically set as the active node, all its ancestor nodes are correctly expanded in all scenarios (including when ancestors were previously collapsed).	✅

Possibly linked issues

• bug(TreeView): TreeView 组件设置激活节点，祖先节点无法正常展开 #8185: PR changes TreeView expand logic, ensuring ancestors fully expand when activating specific child nodes, matching the issue.

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[sourcery-ai]

Hey - I've left some high level feedback:

• With the removal of the collapsed-state check, a node can now be present in both ExpandedNodeCache and CollapsedNodeCache; consider ensuring these caches remain mutually exclusive (e.g., removing from CollapsedNodeCache when adding to ExpandedNodeCache) to avoid conflicting state.
• It may be helpful to add a short comment near CheckExpandAsync explaining the intended interaction between IsExpand, ExpandedNodeCache, and CollapsedNodeCache, since the behavior when toggling expansion is now less obvious from the code alone.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- With the removal of the collapsed-state check, a node can now be present in both ExpandedNodeCache and CollapsedNodeCache; consider ensuring these caches remain mutually exclusive (e.g., removing from CollapsedNodeCache when adding to ExpandedNodeCache) to avoid conflicting state.
- It may be helpful to add a short comment near CheckExpandAsync explaining the intended interaction between IsExpand, ExpandedNodeCache, and CollapsedNodeCache, since the behavior when toggling expansion is now less obvious from the code alone.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.78%. Comparing base (16aca10) to head (a0c58b5).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8186      +/-   ##
==========================================
- Coverage   98.78%   98.78%   -0.01%     
==========================================
  Files         766      766              
  Lines       34221    34217       -4     
  Branches     4699     4698       -1     
==========================================
- Hits        33806    33802       -4     
  Partials      415      415              

Flag	Coverage Δ
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