The launcher is unable to start legacy versions since the latest update.

What I expected to happen was...:
The legacy version being downloaded and started.

What actually happened was...:
I got a "Sorry, couldn't start..." message

Excerpt from launcher_log.txt:
[Info: 2022-11-07 19:49:02.812957106: MinecraftJavaLoggingContext.cpp(52)] Launcher/launcher (main) Info Preparing to launch minecraft client for 1.8.9
[Info: 2022-11-07 19:49:02.812985754: MinecraftJavaLoggingContext.cpp(52)] Launcher/launcher (main) Debug Created game directory <APPDIR>
[Info: 2022-11-07 19:49:02.813026227: MinecraftJavaLoggingContext.cpp(52)] Launcher/launcher (main) Debug Prepared asset index
[Info: 2022-11-07 19:49:02.813321755: NetQueue.cpp(695)] NetQueue: Starting net action https://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json
[Info: 2022-11-07 19:49:02.819167590: LauncherAppRenderer.cpp(290)] MCLauncher.triggerUpdateEvent("coreEvent.gameInstances");
[Info: 2022-11-07 19:49:02.840862352: LauncherAppRenderer.cpp(290)] MCLauncher.triggerUpdateEvent("coreEvent.gameInstances");
[Info: 2022-11-07 19:49:03.364740315: NetQueue.cpp(484)] NetQueue: Primary ip: 54.231.160.56, Host: s3.amazonaws.com
[Info: 2022-11-07 19:49:03.364809714: NetQueue.cpp(573)] NetQueue: Action finished: https://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json
[Warning: 2022-11-07 19:49:03.365097243: Downloadable.cpp(242)] Couldn't download $HOME/.minecraft/assets/indexes/legacy.json after (0) retries : FAILED_TO_DOWNLOAD
Details:
URL: https://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json
Name: legacy.json
File: <APPDIR>/assets/indexes/legacy.json
[Info: 2022-11-07 19:49:03.370699966: MinecraftJavaLoggingContext.cpp(52)] Launcher/launcher (main) Error Unable to download https://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json to <APPDIR>/assets/indexes/legacy.json
[Warning: 2022-11-07 19:49:03.370788921: MinecraftJavaInstallerContext.cpp(786)] Error preparing asset index
[Warning: 2022-11-07 19:49:03.370775061: NetQueue.cpp(607)] Action https://s3.amazonaws.com/Minecraft.Download/indexes/legacy.json failed in response handler. response code: 403 - error string: '
[Warning: 2022-11-07 19:49:03.370865501: MinecraftJavaProductInstance.cpp(487)] Install result has error.