Fix missing properties for token requests for dynamic auth

[george-zubrienko]

Dynamic auth was not passing token request content type and auth scheme from mapped secret

[github-actions]

Coverage after merging fix-missing-dynamic-auth-properties into main will be

0.00%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
Program.cs	0%	0%	0%	0%	17, 21–34, 34, 34–53, 56–58, 60
src/Extensions
RestApiSourceExtensions.cs	0%	0%	0%	0%	29–43, 47–48, 48, 48–55
src/Models
RestApiDynamicAuthStreamContext.cs	0%	100%	0%	0%	14, 19, 24, 30, 35, 40, 45, 52, 57, 62, 67, 73, 78, 83, 88
RestApiFixedAuthStreamContext.cs	0%	100%	0%	0%	14, 19, 24, 29, 35, 40, 45, 52, 57, 62, 67, 73, 78, 83, 88
RestApiPagedDynamicAuthStreamContext.cs	0%	100%	0%	0%	14, 19, 24, 29, 35, 40, 45, 50, 57, 62, 67, 72, 78, 83, 88, 93
RestApiPagedFixedAuthStreamContext.cs	0%	100%	0%	0%	14, 19, 24, 29, 35, 40, 45, 50, 57, 62, 67, 72, 78, 83, 88, 93
src/Models/Base
RestApiDynamicAuthBase.cs	0%	100%	0%	0%	10, 15, 20, 25, 30, 35, 40, 45, 50, 56, 59–71
RestApiFixedAuthBase.cs	0%	100%	0%	0%	10, 13–16
RestApiStreamContextBase.cs	0%	0%	0%	0%	13, 16, 19, 23–25, 29–31, 35–37, 42, 45, 45, 45–46, 48–50, 50, 50–52, 55–56
src/Services
RestApiGraphBuilder.cs	0%	0%	0%	0%	100–103, 103, 103, 103, 103–105, 105, 105–117, 117, 117–134, 136–147, 150–152, 152, 152, 152, 152–173, 175–180, 182–183, 185–196, 199–206, 208–209, 211–222, 27–31, 34–35, 35, 35, 35, 35, 35, 35, 35, 35–67, 70–80, 82–93, 96–99