This filter is documented in wp-admin/edit-tag-form.php
{$taxonomy}_term_edit_form_top
Fires at the beginning of the Edit Term form.
{$taxonomy}_term_edit_form_tag
Fires inside the Edit Term form tag.
{$taxonomy}_pre_edit_form
Fires before the Edit Term form for all taxonomies.
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edit_tag_form_pre
Fires before the Edit Tag form.
edit_link_category_form_pre
Fires before the Edit Link Category form.
edit_category_form_pre
Fires before the Edit Category form.
add_meta_boxes_link
Fires when link-specific meta boxes are added.
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add_meta_boxes_comment
Fires when comment-specific meta boxes are added.
edit_comment_misc_actions
Filters miscellaneous actions for the edit comment form sidebar.
block_editor_no_javascript_message
Filters the message displayed in the block editor interface when JavaScript is not enabled in the browser.
block_editor_settings
Filters the settings to pass to the block editor.
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enqueue_block_editor_assets
Fires after block assets have been enqueued for the editing interface.
write_your_story
Filters the body placeholder text.
allowed_block_types
Filters the allowed block types for the editor, defaulting to true (all block types supported).