Remove use of `tagName` from TagletWriterImpl.linkSeeReferenceOutput

TagletWriterImpl.linkSeeReferenceOutput has the following signature:


    /**
     * Worker method to generate a link from the information in different kinds of tags,
     * such as {@code {@link ...}} tags, {@code @see ...} tags and the {@code link} markup tag
     * in a {@code {@snippet ...}} tag.
     *
     * @param holder the element that has the documentation comment containing the information
     * @param refTree the tree node containing the information, or {@code null} if not available
     * @param refSignature the normalized signature of the target of the reference
     * @param ref the target of the reference
     * @param tagName the name of the tag in the source, to be used in diagnostics
     * @param isLinkPlain {@code true} if the link should be presented in "plain" font,
     * or {@code false} for "code" font
     * @param label the label for the link,
     * or an empty item to use a default label derived from the signature
     * @param reportWarning a function to report warnings about issues found in the reference
     *
     * @return the output containing the generated link, or content indicating an error
     */
    private Content linkSeeReferenceOutput(Element holder,
                                           DocTree refTree,
                                           String refSignature,
                                           Element ref,
                                           String tagName,
                                           boolean isLinkPlain,
                                           Content label,
                                           BiConsumer<String, Object[]> reportWarning) {


It would be better to make the use of tagName either optional or remove it altogether, and refocus diagnostics on the reference, not so much on the enclosing tag.