holoviz/panel: Version 1.8.6

This patch release includes several ESM and React-related fixes, UI behavior improvements, and enhanced robustness in form inputs and file handling. It also bumps key dependencies and improves support for custom deployments. Thanks to @philippjfr, @maximlt, @emunsing, @TheoMathurin, @dalthviz and @hoxbro for their contributions to this release! ✨ Enhancements Add placeholder parameter on FloatInput and IntInput (#8360) Support for file extensions in FileDropper.accepted_filetypes (#8380) Accept 2D arrays for stereo Audio (#8381) 🐛 Bug Fixes Ensure collapsed Card still renders components to avoid child render issues (#8274) ESM & React Components: Fix errors when renamed parameters are linked on ESM components (#8357) Fix rel_path resolution in ESM components (#8375) Fix autoreload watcher setup for ESM apps (#8361) Delay removal of ReactComponent children until new ones are mounted (#8358) Ensure PathLike is accepted for requirements in pyodide conversion calls (#8366) Ensure edit_readonly resets both class- and instance-level parameters (#8371) Fix guest endpoint validation at root path (#8370) Don't attempt to refresh access token if there is no active user session (#8384) Ensure OAuth state for user is reset after failing to refresh access token (#8389) Ensure config.design value is respected by Template (#8388) Improve robustness of Tabulator.page_size inference (#8390) ⚠️ Compatibility & Deprecations Added compatibility for pandas 3.0 (#8385) 📚 Documentation Update Plotly example to prevent flicker on load (#8362) 🧪 Maintenance Bump bokeh to 3.8.2 in Django example app (#8376) Bump preact to 10.26.10 (#8367) Update pre-commit hooks (#8363)