🧪 [test] Refactor output capturing in coverage tests

🧪 [test] Refactors the output capturing mechanism in the extended coverage test suite.
 - Modifies the mock for `Invoke-WithUtf8Encoding` to capture its first argument, which represents the complete rendered text block.
 - This change centralizes how rendered output is collected for test assertions.

🧹 [chore] Suppresses output capturing from the `Write-RenderedText` mock.
 - Prevents duplicate or partial text captures, as the output is now reliably collected by the `Invoke-WithUtf8Encoding` mock.

Signed-off-by: Nick2bad4u <20943337+Nick2bad4u@users.noreply.github.com>

Author: Nick2bad4u

Tests/ColorScripts-Enhanced.CoverageExpansion.Tests.ps1

@@ -613,11 +613,16 @@ Describe "ColorScripts-Enhanced extended coverage" {
             }
             Mock -CommandName Invoke-WithUtf8Encoding -ModuleName ColorScripts-Enhanced -MockWith {
                 param($ScriptBlock, [object[]]$Arguments)
+
+                if ($null -ne $Arguments -and $Arguments.Count -gt 0) {
+                    $script:RenderedOutputs += $Arguments[0]
+                }
+
                 & $ScriptBlock @Arguments
             }
             Mock -CommandName Write-RenderedText -ModuleName ColorScripts-Enhanced -MockWith {
                 param($Text)
-                $script:RenderedOutputs += $Text
+                # Suppress direct console writes during tests; rendered text is captured via Invoke-WithUtf8Encoding mock.
             }
         }