Old issue re-occuring : custom csl file causes the plugin to stop working

[crnkv]

Might be a regression & might be related to #67
Exactly the same behavior as in #67
Problematic csl file: https://raw.githubusercontent.com/citation-style-language/styles/master/dependent/physical-review-letters.csl

Obviously this csl file is overly simplified, not containing enough formatting instructions or macros
But Zotero's built-in style manager does download these csl files (a lot of them are like this), while Zotero still renders these styles
My guess is that Zotero has some "fall-back" default format/style for these kinds of csl files
So I suggest that Pandoc-Reference-List does the same
(Or, at least, display a warning message that says, this csl file contains no format, instead of just displaying "No citations found in the current document", since the problem is not with the current .md document )

Obsidian: 1.7.7
Pandoc Reference List: 2.0.25
Pandoc installation: 3.3
Zotero: 7.0.11

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remark: The plugin still works while using other custom csl files or using Pandoc-Reference-List built-in Citation Styles. The problem is csl file-specific