Fires before each tab on the Install Plugins screen is loaded.

The dynamic portion of the hook name, $tab, allows for targeting
individual tabs.

Possible hook names include:

• install_plugins_pre_beta
• install_plugins_pre_favorites
• install_plugins_pre_featured
• install_plugins_pre_plugin-information
• install_plugins_pre_popular
• install_plugins_pre_recommended
• install_plugins_pre_search
• install_plugins_pre_upload

do_action( "install_plugins_pre_{$tab}" );