Fix CI failures and address review feedback for hyphenated names

Co-authored-by: hainesr <143558+hainesr@users.noreply.github.com>

Author: Copilot

lib/cff/formatters/formatter.rb

@@ -41,6 +41,8 @@ def self.select_and_check_model(model, preferred_citation)
       end
 
       def self.initial_from_name_part(part)
+        return part[0].capitalize unless part.include?('-')
+
         part.split('-').filter_map { |sub| sub[0]&.capitalize }.join('.-')
       end
 

test/files/formatted/hyphenated-names.apa

@@ -1 +1 @@
-Kling, M.-U., & Picard, J.-L. (2021). Hyphenated names test [Computer software]
+Kling, M.-U., Picard, J.-L., & Smith, J. (2021). Hyphenated names test [Computer software]

test/files/formatted/hyphenated-names.bibtex

@@ -0,0 +1,6 @@
+@software{Kling_Hyphenated_names_test_2021,
+author = {Kling, Marc-Uwe and Picard, Jean-Luc and Smith, John},
+month = sep,
+title = {{Hyphenated names test}},
+year = {2021}
+}

test/files/formatter/hyphenated-names.cff

@@ -5,5 +5,7 @@ authors:
     given-names: Marc-Uwe
   - family-names: Picard
     given-names: Jean-Luc
+  - family-names: Smith
+    given-names: John
 title: Hyphenated names test
 date-released: 2021-09-21