material-encryptcontent: reload all subscriptions

[joapuiib]

I'm working with this plugin to publish exams. In order to get mermaid working, I had to follow the instructions specified in Mermaid.js section in README.md.

This works, but will only reload Mermaid, not other JS features (code.copy, for example).

---

Relevant issue in mkdocs-material: squidfunk/mkdocs-material#5816 (comment)

Since, all JS associated with document content changes are subscribed to document$:

document$.subscribe(function() {
  console.log("Put your code here") // Executes on `DOMContentLoaded` and on instant navigation
})

We can trigger all subscriptions after a decryption:

function theme_run_after_decryption() {
    document$.next(document);
}

---

I've tested it in my site, and it works, but it might need further testing.

[joapuiib]

Also, maybe, it could be included in the code directly so no extra_javascript configuration is needed:

mkdocs-encryptcontent-plugin/encryptcontent/decrypt-contents.tpl.js

Lines 437 to 458 in a249b57

	// any post processing on the decrypted content should be done here
	{% if arithmatex -%}
	if (typeof MathJax === 'object') { MathJax.typesetPromise();};
	{%- endif %}
	{% if mermaid2 -%}
	if (typeof mermaid === 'object') { mermaid.contentLoaded();};
	{%- endif %}
	{% if hljs -%}
	decrypted_content.querySelectorAll('pre code').forEach((block) => {
	hljs.highlightElement(block);
	});
	{%- endif %}
	{% if reload_scripts | length > 0 -%}
	let reload_scripts = {{ reload_scripts }};
	for (let i = 0; i < reload_scripts.length; i++) {
	{% if webcrypto %}await {% endif %}reload_js(reload_scripts[i]);
	}
	{%- endif %}
	if (typeof theme_run_after_decryption !== 'undefined') {
	theme_run_after_decryption();
	}

[unverbuggt]

Great solution. Way better than the one I came up with for #58. I'll add it to the decrypt-contents js template