TreeView: boolean fallback should use `??` instead of `||`

[MrSentex]

Summary

Boolean fallback values in TreeView use || false instead of nullish coalescing, which can lead to incorrect behavior for configuration options.

Steps to Reproduce

const foo = new HSTreeView(element, {
    isIndeterminate: false,
});

console.log(foo.isIndeterminate);

Source:

preline/src/plugins/tree-view/core.ts

Line 53 in 1cd9636

this.isIndeterminate = concatOptions?.isIndeterminate || true;

Demo Link

https://stackblitz.com/edit/preline-4-1-3-react-vite

Expected Behavior

The fallback should only apply when the value is null or undefined.

Actual Behavior

|| checks for truthiness instead of existence, so falsy values are treated as missing values.

Screenshots

No response