v6.4.46 release

• Add a "Next Episode" button to the details screen on phones and tablets (feature parity with TV UI).
• Improve automatic subtitle selection to correctly choose preferred Chinese language variants (Simplified vs. Traditional).
• Fix video distortion and incorrect aspect ratios on anamorphic videos and Matroska files with custom display dimensions.
• Fix video scaling and aspect ratio distortion when mirroring playback over HDMI to an external display.
• Improve audio and video synchronization when starting playback over Bluetooth audio devices.
• Improve audio timing and synchronization stability when using AC3 audio recoding on TV under Android OS connected to AVR.
• Improve SMB network share connections by automatically detecting the supported protocol for each server (please report any regression).
• Fix playback failures for long streaming URLs and added support for custom HTTP headers.
• Fix scheduled background network rescans running in an endless loop.
• Improve TV show library scanning to reliably import missing episode details, artwork, and local NFO file updates over network shares.
• Automatically clean up unused network server entries when removing indexed folders.
• Fix a potential app crash when loading artwork images with extreme aspect ratios.