Apply whitespace rules for LStrip and Trim to comment blocks, resolves #1218

[hrdixon]

Fixing bug: LStrip and Trim are not being applied consistently with other jinja engines when it comes to comment blocks.

Example python behaviour (Jinja2):

Python 3.10.12 (main, Sep 11 2024, 15:47:36) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from jinja2 import Environment
>>> env = Environment(trim_blocks=True, lstrip_blocks=True)
>>> template = env.from_string("""<div>
...     {# a comment #}
...         yay
...     {# another comment
...        This time, over multiple lines
...      #}
...         whoop
... </div>""")
>>> template.render()
'<div>\n        yay\n        whoop\n</div>'
>>> print(template.render())
<div>
        yay
        whoop
</div>
>>>

[jasmith-hs]

LGTM, thank you