fix(wado-rs): can not decode some multipart properly

[Chinlinlee]

Describe what this pull request is trying to achieve

• The wadorsloader not decode some multipart response properly

Additional notes and description of your changes

• In this code snippet, it try to convert all buffer to string, as may exceeds max string length when encountering large data.
  

  bluelight/bluelight/scripts/viewer.js

  Lines 124 to 127 in 5c90ef4

  	let intArray = new Uint8Array(resBlob);
  	let charArray = new Array(intArray.length);
  	for (let i = 0; i < intArray.length; i++) charArray[i] = String.fromCodePoint(intArray[i]);
  	let responseText = charArray.join('');

• Here, acceptable headers are hardcode, and rereturing headers that are legal (e.g. Content-Location) will result in decoding failure
  

  bluelight/bluelight/scripts/viewer.js

  Lines 138 to 152 in 5c90ef4

  	function getStartIndex(responseText) {
  	var fileStartIndex = [];
  	let teststring = ["Content-Type", "Content-Length", "MIME-Version"]
  	let matchesIndex;
  	for (let type of teststring) {
  	let contentTypeMatches = responseText.matchAll(new RegExp(`${type}.*[\r\n|\r|\n]$`, "gim"));
  	for (let match of contentTypeMatches) {
  	if (isNaN(match.index)) continue;
  	if (!matchesIndex || (match.index > matchesIndex.index))
  	matchesIndex = { index: match.index, length: match['0'].length };
  	}
  	}
  	fileStartIndex.push(matchesIndex.index + matchesIndex.length + 3);
  	return fileStartIndex;
  	}

• Use multipartDecode from dcmjs and it work properly

Environment this was tested in

• OS: Windows 11 24H2
• Browser: 132.0.6834.197

Test Details

• Use serve to host bluelight in local
• Open /bluelight/html/start?StudyInstanceUID=1.3.6.1.4.1.14519.5.2.1.1869.4002.216192212057343433620283048159
• Display images fine

Related Issues

• Fails to display image over WADO-RS #43