[Bug] Microsoft.IdentityModel.Xml.XmlUtil.GetXsiTypeAsQualifiedName searches 'Type' attribute instead of 'type'

[VirusQuartirus]

Which version of Microsoft.IdentityModel are you using?
Microsoft.IdentityModel.Tokens.Saml 6.18

Where is the issue?

• M.IM.Tokens.Saml

Is this a new or an existing app?
New app

Repro
Saml2.xml

<saml:Assertion xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" ID="_e9c223c5-1792-4a85-9a44-938e0dcb017d" IssueInstant="2022-06-10T09:59:33.679Z" Version="2.0">
	<saml:Issuer>FooBar</saml:Issuer>
	<saml:Subject>
		<saml:NameID>UserKey</saml:NameID>
		<saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer"></saml:SubjectConfirmation>
	</saml:Subject>
	<saml:Conditions NotBefore="2022-06-10T09:59:33.665Z" NotOnOrAfter="2022-06-10T10:59:33.669Z">
		<saml:Condition xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="saml:OneTimeUseType" />
	</saml:Conditions>
</saml:Assertion>

var tokenString = File.ReadAllText(@"Saml2.xml");
var handler = new Microsoft.IdentityModel.Tokens.Saml2.Saml2SecurityTokenHandler();
var token = handler.ReadSaml2Token(tokenString);

Expected behavior
Token should be read successfully.

Actual behavior
Fails with following exception:
Microsoft.IdentityModel.Tokens.Saml2.Saml2SecurityTokenReadException
HResult=0x80131500
Message=IDX13119: An abstract element was encountered which does not specify its concrete type. Element name: '[PII of type 'System.String' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]' Namespace: '[PII of type 'System.String' is hidden. For more details, see https://aka.ms/IdentityModel/PII.]'
Source=Microsoft.IdentityModel.Tokens.Saml
StackTrace:
at Microsoft.IdentityModel.Tokens.Saml2.Saml2Serializer.ReadConditions(XmlDictionaryReader reader) in /_/src/Microsoft.IdentityModel.Tokens.Saml/Saml2/Saml2Serializer.cs:line 879

Possible solution
Fix typo in XmlSignatureConstants.Attributes.Type.

[brentschmaltz]

You are correct, this is a bug, we will fix it.

[westin-m]

Currently blocked on whether or not the signatures used to test DSig methods that use this field need to be replaced.