Releases for HTML Processor

Bug fixes since 1.0.0-rc1.

**Issue #3607280: Fix bypass body-context sanitizer for container extractions**

Fixes silent stripping of ``, ``, and `
` elements when `head` is
included in the `container` selector. Adds `head_filter` pipeline option to trim head
content to a semantic metadata allowlist. Adds `getPipelineOptionsSchema()` to
`HtmlProcessorInterface`.

**Issue #3607368: Fix HtmlSanitizerConfigBuilder silently truncating input at Symfony's 20,000-byte default**

First release candidate of HTML Processor — a standalone module providing a
reusable HTML processing pipeline and services, extracted from
`document_loader_html_processor` (see #3606910: Extract HTML processing logic into a standalone HTML Processor module (https://www.drupal.org/node/3606910)).