Parser: Fix Action View Helpers with positional arguments and block

[marcoroth]

This pull request fixes how the parser handles Action View tag helpers when both positional arguments and an inline block are present.

Previously, content_tag and tag.* would use the positional content argument even when a block was given. Rails always prefers the block content, so now the parser matches that behavior:

<%= content_tag(:div, "ignored") { "Block wins" } %>
<!-- Rails renders: <div>Block wins</div> -->

This also fixes attribute extraction for link_to when the second argument is an explicit hash literal or a variable:

<%= link_to("/about", { class: "btn" }) { "About" } %>
<!-- Now correctly extracts: href="/about", class="btn", body="About" -->

<%= link_to("/about", html_opts) { "About" } %>
<!--  Variable options are now represented as RubyHTMLAttributesSplatNode -->

Follow up on #1404

[pkg-pr-new]

npx https://pkg.pr.new/@herb-tools/formatter@1406

npx https://pkg.pr.new/@herb-tools/language-server@1406

npx https://pkg.pr.new/@herb-tools/linter@1406

commit: 3280d03

[github-actions]

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