By Richard Cowan WASHINGTON (Reuters) – The U.S. House of Representatives on Tuesday approved legislation to fund federal government agencies through March 11 and avoid a chaotic shutdown of many of Washington’s operations when existing money expires at midnight on Feb. 18. The House voted 272-162 to approve the stop-gap measure that will give Democratic and Republican negotiators in the House and Senate an additional three weeks to work out a deal on a full-year funding bill. The temporary measure — the third since the start of the fiscal year that began on Oct. 1 — now goes to the Senate, …