Patch for missing tick data in history call

[jhonabreul]

Description

This solves unmatching tick count in history calls, as described in #6929 but this is only a patch. The actual bug is in the Slice.Get method, which is expecting a dictionary of Symbol->T. In the Tick case, each slice might have multiple ticks, and it is only getting the last one in order to comply with the expected dictionary.

Related Issue

Part of #6929
Might close it but it is only a patch, we would need a spin off issue or keep it open.

Motivation and Context

Requires Documentation Change

How Has This Been Tested?

Unit test and regression algorithm

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Refactor (non-breaking change which improves implementation)
• Performance (non-breaking change which improves performance. Please add associated performance test and results)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Non-functional change (xml comments/documentation/etc)

Checklist:

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My branch follows the naming convention bug-<issue#>-<description> or feature-<issue#>-<description>